AMETEK Programmable Power, Inc., a Division of AMETEK, Inc., is a global leader in the design and
manufacture of precision, programmable power supplies for R&D, test and measurement, process
control, power bus simulation and power conditioning applications across diverse industrial segments.
From bench top supplies to rack-mounted industrial power subsystems, AMETEK Programmable Power
is the proud manufacturer of Elgar, Sorensen, California Instruments and P ower Ten brand power
supplies.
AMETEK, Inc. is a leading global manufacturer of electronic instruments and electromechanical devices
with annualized sales of $3.3 billion. The Company has over 11,000 colleagues working at m ore than 80
manufacturing facilities and more than 80 sales and service centers in the United States and around the
world.
Trademarks
AMETEK is a registered trademark of AMETEK, Inc. California Instruments is a trademark owned by
AMETEK, Inc. Other trademarks, registered trademarks, and product names are the property of their
respective owners and are used herein for identification purposes only.
UNLESS SPECIFICALLY AGREED TO IN WRITING, AMETEK PROGRAMMABLE POWER, INC. (“AMETEK”):
(a) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY TECHNICAL
OR OTHER INFORMATION PROVIDED IN ITS MANUALS OR OTHER DOCUMENTATION.
(b) ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSSES, DAMA GES, COSTS OR EXPENSES,
WHETHER SPECIAL, DIRECT, INDIRECT, CONSEQUENTIAL OR INCIDENTAL, WHICH MIGHT ARISE
OUT OF THE USE OF SUCH INFORMATION. THE USE OF ANY SUCH INFORMATION WILL BE
ENTIRELY AT THE USER’S RISK, AND
(c) REMINDS YOU THAT IF THIS MANUAL IS IN ANY LANGUAGE OTHER THAN ENGLISH, ALTHOUGH
STEPS HAVE BEEN TAKEN TO MAINTAIN THE ACCURACY OF THE TRANSLATION, THE ACCURACY
CANNOT BE GUARANTEED. APPROVED AMETEK CONTENT IS CONTAINED WITH THE ENGLISH
LANGUAGE VERSION, WHICH IS POSTED AT WWW.PROGRAMMABLEPOWER.COM.
Date and Revision
June 2013, Revision A
Part Number
M440077-01
Contact Information
Telephone: 800 733 5427 (toll free in North America)
858 450 0085 (direct)
Before applying power to the system, verify that your product is configured properly for your particular
application.
WARNIN
G
WARNIN
G
Only qualified personnel who deal with attendant hazards in power supplies, are allowed to perform
installation and servicing.
Ensure that the AC power line ground is connected properly to the Power Rack input connector or
chassis. Similarly, other power ground lines including those to application and maintenance equipment
must be grounded properly for both personnel and equipment safety.
Always ensure that facility AC input power is de-energized prior to connecting or disconnecting any cable.
In normal operation, the operator does not have access to hazardous voltages within the chassis.
However, depending on the user’s application configuration, HIGH VOLTAGES HAZARDOUS TO HUMAN SAFETY may be normally generated on the output terminals. The customer/use r must ensure
that the output power lines are labeled properly as to the safety hazards and that any inadvertent contact
with hazardous voltages is eliminated.
Guard against risks of electrical shock during open cover checks by not touching any portion of the
electrical circuits. Even when power is off, capacitors may retain an electrical charge. Use safety glasses
during open cover checks to avoid personal injury by any sudden component failure.
Neither AMETEK Programmable Power Inc., San Diego, California, USA, nor any of the subsidiary sales
organizations can accept any responsibility for personnel, material or inconsequential injury, loss or
damage that results from improper use of the equipment and accessories.
Hazardous voltages may be present when covers are removed. Qualified
personnel must use extreme caution when servicing this equipment.
Circuit boards, test points, and output voltages also may be floating above
(below) chassis ground.
The equipment used contains ESD sensitive parts. When installing
equipment, follow ESD Safety Procedures. Electrostatic discharges might
cause damage to the equipment.
SAFETY SYMBOLS
BPS Series User Manual M440077-01 Rev A 4
AMETEK Programmable Power
Product Family: BPS Series AC Power Source
Warranty Period: 1 Year
WARRANTY TERMS
AMETEK Programmable Power, Inc. (“AMETEK”), provides this written warranty covering the Product
stated above, and if the Buyer discovers and notifies AMETEK in writing of any defect in material or
workmanship within the applicable warranty period stated above, then AMETEK may, at its option:
repair or replace the Product; or issue a credit note for the defective Product; or provide the Buyer with
replacement parts for the Product.
The Buyer will, at its expense, return the defective Product or parts thereof to AMETEK in accordance
with the return procedure specified below. AMETEK will, at its expense, deliver the repaired or replaced
Product or parts to the Buyer. Any warranty of AMETEK will not apply if the Buyer is in default under
the Purchase Order Agreement or where the Product or any part thereof:
is damaged by misuse, accident, negligence or failure to maintain the same as specified
or required by AMETEK;
is damaged by modifications, alterations or attachments thereto which are not authorized
by AMETEK;
is installed or operated contrary to the instructions of AMETEK;
is opened, modified or disassembled in any way without AMETEK’s consent; or
is used in combination with items, articles or materials not authorized by AMETEK.
The Buyer may not assert any claim that the Products are not in conformity with any warran ty until the
Buyer has made all payments to AMETEK provided for in the Purchase Order Agreement.
PRODUCT RETURN PROCEDURE
Request a Return Material Authorization (RMA) number from the repair facility (must be done in
the country in which it was purchased):
In the USA, contact the AMETEK Repair Department prior to the return of the product
to AMETEK for repair:
Telephone: 800-733-5427, ext. 2295 or ext. 2463 (toll free North America)
858-450-0085, ext. 2295 or ext. 2463 (direct)
Outside the United States, contact the nearest Authorized Service Center (ASC). A
full listing can be found either through your local distributor or our website,
www.programmablepower.com, by clicking Support and going to the Service Centers tab.
When requesting an RMA, have the following information ready:
Model number
Serial number
Description of the problem
NOTE: Unauthorized returns will not be accepted and will be returned at the shipper’s expense.
NOTE: A returned product found upon inspection by AMETEK, to be in specification is subject to an
5. Front Panel Operation ...................................................................................................................... 58
5.1Tour of the Front Panel ....................................................................................................................... 58
5.1.1Front Panel Controls and Indicators ..................................................................................... 58
7.5.1Power Source Gain Adjustment ........................................................................................... 129
8. Service ......................................................................................................................................... 131
Figure 2-1: Sample BPS90 Voltage / Current Rating Chart for 150/300 V AC Ranges – Derated. ...................................... 15
Figure 2-2: Sample BPS90 Voltage / Current Rating Chart, -HV Option – Max. Rating. ..................................................... 21
Figure 2-3: Sample BPS90 Voltage / Current Rating Chart, -HV Option – Derated. ............................................................ 21
Figure 3-1: The BPS30 or BPS45 Power Source .................................................................................................................. 23
Figure 3-2: Location of BPS30 and BPS45 AC Input Fuse Block and Chassis Ground Connection - Front View, Panel
Figure 5-2: FUNCTION Keypad .......................................................................................................................................... 61
Figure 5-3: Entering Values from the Decimal Keypad ........................................................................................................ 63
Figure 5-4: Cursor UP Key Movement ................................................................................................................................. 63
Figure 5-5: Cursor DOWN key Movement ........................................................................................................................... 64
Figure 5-6: Main Menu 1 Screen ........................................................................................................................................... 64
Figure 5-7: Menu 1 through 3 ............................................................................................................................................... 65
Figure 5-8: PROGRAM Menu .............................................................................................................................................. 69
Figure 5-9: MEASUREMENTS Screen, Sing le Phase and Three Phase Modes ................................................................... 71
Figure 5-10: TRANSIENTS Menu ........................................................................................................................................ 73
Figure 5-11: VOLTAGE SURGE/SAG SETUP Screen ....................................................................................................... 74
Figure 5-12: VOLTAGE SWEEP/STEP SETUP Screen ...................................................................................................... 76
Figure 5-13: FREQUENCY SWEEP/STEP SETUP Screen ................................................................................................. 78
Figure 5-23: MEASUREMENT CAL FACTORS Menu. ..................................................................................................... 91
Figure 5-24: OUTPUT CAL FACTORS Menu (Series II only) ............................................................................................ 92
Figure 5-26: SET VOLT Trigger Source Acquis ition ........................................................................................................... 98
Figure 7-3: DC offset AC filter ........................................................................................................................................... 126
Table 4-8: External Sense Connector ............................................................................................................................................... 50
Table 4-9: RS232 Connector pin out – BPS Series with RS232 and USB. ........................................................................................... 51
Table 4-10: USB Connector pin out. ................................................................................................................................................ 52
Table 4-11: RJ45 LAN Connector pin out. ....................................................................................................................................... 53
This instruction manual contains information on the installation, operation, calibration and maintenan c e
for the California Instruments BPS Series power sources with the programmable controller.
1.1 General Description
The BPS Series AC power source systems are high efficiency, floor standing AC bulk power sources that
provide a precise output with low distortion. Available voltage ranges are 0-150 Vac, 0-300 Vac and 0400 Vac in AC mode. Various models are available that can provide either single or three phase output
power levels in an AC only mode of operation.
All BPS models provide interface features such as a standard RS232C, USB, IEEE-488 interfaces and an
available LAN option.
The BPS Series units are contained in a floor standing enclosure on casters. This allows the units to be
moved around more easily.
Read the installation instructions carefully before attempting to install and operate the BPS Series power
systems. If you have any questions or concerns please contact the factory prior to applying power to the
system.
1.2 Manual Organization and Format
All user documentation for California Instruments power sources is provided on CDROM in electronic
format. (Adobe Portable Document Format) The required Adobe PDF viewer is available for download
from the www.adobe.com
To request a hardcopy from AMETEK Programmable Power, contact customer service at
service.ppd@ametek.com
website. This manual may be printed for personal use if a hardcopy is desired.
. There will be a charge for providing printed manuals.
This manual contains sections on installation, normal use, maintenance and calibration. If the BPS system
is equipped with a GPIB, RS232C, USB or LAN interface, refer to the BPS Programming manual for
information on using the remote control interfaces and command syntax. The programming manual is
provided on the same CDROM as this user manual.
BPS Series User Manual M440077-01 Rev A 11
AMETEK Programmable Power
2. Specifications
Specifications shown are valid over an ambient temperature range of 25 5 C and apply after a 30
minute warm-up time. Unless otherwise noted, all specifications are per phase for sine wave output into
a resistive load. For three phase configurations or mode of operation, all specifications are for Line to
Neutral (L-N) and phase angle specifications are valid under balanced load conditions only.
2.1 Electrical
2.1.1 Input
Parameter BPS30 BPS45 BPS75 BPS90 BPS150 BPS180
Line Voltage:
(3 phase, 3 wire
+ ground (PE))
Line VA: 37 KVA 53 KVA 88 KVA106 KVA 176KVA212 KVA
208 V
230 V
400 V
480 V
10%
LL
10%
LL
10%
LL
10%
LL
Line Current: 116 A
105 A
60 A
50 A
187 V
207 V
RMS
360 V
RMS
432 V
RMS
RMS
LL
LL
LL
LL
@
@
@
@
187 V
207 V
RMS
360 V
RMS
432 V
RMS
RMS
LL
LL
LL
LL
@
@
@
@
292 A
261 A
150 A
125 A
175 A
157 A
90 A
75 A
187 V
207 V
360 V
432 V
RMS
RMS
RMS
RMS
LL
LL
LL
LL
@
@
@
@
350 A
187 V
314 A
207 V
180 A
360 V
150 A
432 V
RMS
RMS
RMS
RMS
LL
LL
LL
LL
@
@
@
@
Each BPS150
Line Frequency: 47-63 Hz
Efficiency: 85 % (typical) depending on line and load
Power Factor: 0.95 (typical) / 0.99 at full power.
Inrush Current: 230 Apk @
208 V
LL
220Apk @
230
VLL
132Apk @
400
VLL
110Apk @
480
VLL
@
230
Apk
208 V
LL
220Apk @
230
VLL
132Apk @
400
VLL
110Apk @
480
VLL
@
460
Apk
208 V
LL
440Apk @
230
VLL
264Apk @
400
VLL
220Apk @
480
VLL
@
460
Apk
208 V
LL
440Apk @
230
VLL
264Apk @
400
VLL
220Apk @
480
VLL
Each BPS150
Hold-Up Time: > 10 ms
Isolation
Voltage:
2200 VAC input to output
1350 VAC input to chassis
chassis
requires its
own AC
service.
Total Line
currents are
2 x BPS150
chassis
requires its
own AC
service.
Total Peak
currents are
2 x BPS75
Each BPS180
chassis
requires its
own AC
service.
Total Line
currents are
2 x BPS90
Each BPS180
chassis
requires its
own AC
service.
Total Peak
currents are
2 x BPS90
BPS Series User Manual M440077-01 Rev A 12
AMETEK Programmable Power
2.1.2 Output
Note: All specifica tions are for AC unless otherwise indicated.
AC Mode Low: 0 - 150 V / High: 0 - 300 V, (0-400V optional)
Resolution:
AC Mode 0.1 V
Accuracy: ± 0.3 V < 100Hz, ± 0.6 V > 100Hz, AC mode
From 5% V range to 100% of V range, RMS bandwidth < 10KHz
Single or three phase depending on model.
± 1 V DC mode
Distortion THD1:
(Resistive full load,
normal mode)
< 0.5 % @ 16 - 66 Hz
< 1.00 % @ 66 - 500 Hz
< 1.25 % @ > 500 Hz
Load Regulation: 0.25 % FS @ DC - 100 Hz
0.5 % FS @ > 100 Hz
Line Regulation: 0.1% for 10% input line change
DC Offset Voltage: < 20 mV
Output Noise:
(20 kHz to 1 MHz)
< 2 V
< 3 V
low V Range
RMS
high V Range
RMS
Output Coupling AC coupled all voltage ranges.
Power: (total power for all phases, either range, at full scale voltage, maximum ambient T = 35° C)
AC Mode 30 KVA45 KVA75 KVA90 KVA150 KVA180 KVA
Current:
Note: Current, maximum amps indicated per phase available between 50 and 100 % of voltage range. Maximum
ambient temperate for full power operation at full-scale voltage is 35° C.
AC Mode
Single Phase
AC Mode
Three Phase
BPS30-1,
single phase
V Lo: 200A
V Hi: 100A
BPS30-3,
per phase
V Lo: 67A
V Hi: 34A
BPS45-1,
single phase
V Lo: 300A
V Hi: 150A
BPS45-3,
per phase
V Lo: 100A
V Hi: 50A
N/A
BPS75-3,
per phase
V Lo: 167A
V Hi: 83A
N/A
BPS90-3,
per phase
V Lo: 200A
V Hi: 100A
N/A
BPS150-3,
per phase
V Lo: 333A
V Hi: 167A
N/A
BPS180-3,
per phase
V Lo: 400A
V Hi: 200A
Constant Power Mode:
Operation at higher currents but constant power is possible from 80% of Voltage range (125% of max.
current) declining to 100% of maximum current at 100 % of voltage range for short periods of time or at
reduced ambient temp. (< 15 mins @ 30° C). See Figure 2-1 and Figure 2-4.
Note: Current derates linearly from 50% of voltage range to 20% of specified current at 5% of voltage range
1
The distortion specification for the BPS Series is valid for pure (inductance < 12 uH) resistive load conditions and using a 30
Note: Maximum Peak Current shown. Value shown reflects absolute peak current protection level. This level may not be reached
under all load conditions. Depending on load conditions, peak current may max out at lower levels due to amplifier output impedance.
Note: A repetitive peak current limit function is provided which will generate a fault and shut off the power supply if the peak
current drawn by the load exceeds the maximum level for more than 30 seconds. During this time, the amplifier will limit the peak
current at a somewhat level above the maximum level but it is not allowable to run in this mode indefinitely. This should provide
sufficient time to ride through any startup/inrush load conditions.
Input: Isolated TTL input for external frequency control. Requires 5V at 5 mA for logic high.
Accuracy: Ext. Sync to phase A with fixed Ext. Sync Frequency input:
Note: Output specificatio ns apply below the Current / Voltage rating lines shown in the V/I rating
chart below.
BPS Series User Manual M440077-01 Rev A 14
AMETEK Programmable Power
Figure 2-1: Sample BPS90 Voltage / Current Rating Chart for 150/300 V AC Ranges – Derated.
2.1.3 AC Measurements
Listed measurement specifications apply to BPS90 model only. See notes for other models and
configurations.
Parameter Range
Frequency 16.00 - 820.0 Hz 0.01% + 0.01 Hz 0.01 to 81.91 Hz
RMS Voltage 0 - 300 Volts 0.1% FS, < 100 Hz
RMS Current 0 - 250 Amps 0.5% FS, < 100 Hz
Peak Current 0 - 750 Amps 2% FS, < 100 Hz
VA Power per
Phase
Real Power per
Phase
Power Factor
(>0.2kVA)
Note: Accuracy specifications are valid above 100 counts. For current and power measurements, specifications apply
from 2% to 100% of measurement range.
Note: Power factor accuracy applies for PF > 0.5 and VA > 50 % of max.
0 - 30 KVA 1% FS , < 100 Hz
0 - 30 KW 1% FS, < 100 Hz
0.00 - 1.00 0.01, <100 Hz
Accuracy ()
0.2% FS, > 100 Hz
1.0% FS, > 100 Hz
4% FS, > 100 Hz
2% FS, > 100 Hz
2% FS, > 100 Hz
0.02, 100-820 Hz
Resolution
0.1 to 500 Hz
1 Hz above 500 Hz
0.01 Volt
0.1 Amp
0.1 Amp
10 VA
10 W
0.01
BPS Series User Manual M440077-01 Rev A 15
AMETEK Programmable Power
2.1.4 System Specification
Parameter Specification
External Modulation: 0 to 10%
Synchronization Input: Isolated TTL input for external frequency control. Requires 5V at 5 mA for logic high.
Trigger Input: External trigger source input. Requires TTL level input signal. Triggers on negative edge.
Response time 80 - 100 s.
Trigger Output:
Function Strobe:
Output Status: Monitors status of output relay. Isolated TTL output. High if output relay is closed, low if
Programmable through transient list system. 400
Isolated TTL output. Output reverts to Function strobe when not uses as Trig Out. This
function is mutually exclusive with the Function Strobe output.
Active for any voltage or frequency program change. 400
change. Isolated TTL output. This function is mutually exclusive with the Trigger Output.
Same output is used for Trigger Output if Trigger Output is programmed as part of list
system.
output relay is open.
16 complete instrument setups and transient lists, 100 events per list.
Frequency: step, sag, surge, sweep
Voltage and Frequency: step, sweep
Syntax: IEEE 488.2 and SCPI
Response time is 10 ms (typical)
9 pin D-shell connector
Handshake: CTS, RTS
Data bits: 7, 8
Stop bits: 1,2
Baud rate: 9600 to 115,200 bps
Syntax: IEEE 488.2 and SCPI.
Note: Disconnect any USB connection when using the RS232 interface.
s pulse for voltage or frequency change.
s pulse for voltage or frequency
USB Interface: Standard USB 1.1 peripheral.
Data transfer rate: 460,800 bps
Syntax: IEEE 488.2 and SCPI.
Note: Use of the USB port to control more than one power source from a single
PC is not recommended, as communication may not be reliable. Use GPIB
interface for multiple power source control.
LAN Interface: Option –LAN. When the LAN interface is installed, the RS232 interface is disabled.
RJ45 Connector, 10BaseT, 100BaseT or 1000BaseT,
Data transfer rate: 460,800 bps
Protocol: TCP/IP.
Syntax: IEEE 488.2 and SCP
Note: Disconnect any USB connection when using the LAN interface.
Current Limit Modes: Two selectable modes of operation:
1. Constant current mode (voltage folds back with automatic recovery)
2. Constant voltage mode with trip-off (Relays open).
BPS Series User Manual M440077-01 Rev A 16
AMETEK Programmable Power
2.1.5 Unit Protection
Input Over current: In-line fast acting fuses. Check fuse rating in Service and Maintenance section.
Ratings will depend on AC input configuration settings.
Circuit breaker for LV supply.
Input Over voltage: Automatic shutdown.
Input Over voltage
Transients:
Output Over current: Adjustable level constant current mode with programmable set point.
Output Short Circuit: Peak and RMS current limit.
Over temperature: Automatic shutdown.
Surge protection to withstand EN50082-1 (IEC 801-4, 5) levels.
2.2 Mechanical
Parameter Specification
Dimensions:
(for each BPS 30 / BPS45
chassis)
Unit Weight:
(for each BPS30/BPS45
chassis)
Dimensions:
(for each BPS75 / BPS90
chassis)
Unit Weight:
(for each BPS75 / BPS90
chassis)
Height: 50.0” 1270 mm
Width: 28.75” 731 mm
Depth: 34.5” 876 mm
Net: 1150 lbs / 522 Kg approximately
Shipping: 1231 lbs / 560 Kg
Height: 74.5” 1892.3 mm
Width: 30.3” 769.6 mm
Depth: 38.3” 972.8 mm
Net: 2150 lbs / 975 Kg approximately
2475 lbs / 1123 Kg approximately
Shipping: 2450 lbs / 1111 Kg
2775 lbs / 1258 Kg approximately
approximately
approximately
Material: Steel or aluminum chassis, panels and covers.
Finish: Light textured painted external surfaces.
Panels semi-gloss polyurethane color no. 26440 (medium gray)
Cooling: Fan cooled with air intake on the front and exhaust to the rear.
Fans: 14 x 225CFM.
Air displacement 50 Cu Ft/sec. Max.
Internal Construction: Modular sub assemblies.
Rear Panel
Connections:
(See section 3and 4 for description of connections)
Cable entry and strain relieve for AC input wiring
Cable entry and strain relieve for AC output wiring
External sense terminal block (Remote voltage sense)
System interface (2x)
RS232, USB, GPIB, LAN (option)
Trigger In BNC
Trigger Out BNC
Function Strobe BNC
Output Status
BPS Series User Manual M440077-01 Rev A 17
AMETEK Programmable Power
2.3 Environmental
Parameter Specification
Operating Temp:
0° to +35 C. (Except in CP mode).
+32° to +104° F.
Storage Temp:
Altitude: < 2000 meters
Relative Humidity:
Installation/Over voltage
Category:
Pollution Degree: 2
Indoor Use Only Dry and non-conductive particulate environment.
Vibration: Designed to meet NSTA 1A transportation levels.
Shock: Designed to meet NSTA 1A transportation levels.
-40° to +85 C.
-40° to +185° F.
0-95 % RAH, non-condensing maximum for temperatures up to 31C decreasing
linearly to 50% at 40C.
2.4 Regulatory
Electromagnetic Emissions
and Immunity:
Acoustic Noise: 75 dBA maximum at 0% to 50% load, 80 dBA maximum greater than 50% load to
Safety: Designed to EN 61010-1 European safety standards as required for the “CE” mark.
Designed to meet EN50081-2 and EN50082-2 European Emissions and Immunity
standards as required for the “CE” mark.
100% load. Measured at one meter.
2.5 Front Panel Controls
Controls:
Shuttle knob: Allows continuous change of all values including output calibration and range change.
Decimal keypad: A conventional decimal keypad facilitates quick entry of numerical values such as
voltage, current limit, etc. The large blue enter key will make the value you enter
effective. Using the SET key allows the user to preset all parameter values and update
them all at once by pressing the Enter key.
Up/down arrow keys: A set of up and down arrow keys is used to move the cursor position in all menus.
This allows quick selection of the desired function or parameter.
Function keys: Measure key will display most measurement values. Program key will show all
program parameters. Output on/off key for output relay control. Phase key will switch
display to show program and measured values for each phase.
BPS Series User Manual M440077-01 Rev A 18
AMETEK Programmable Power
Displays:
LCD graphics display: A large high contrast LCD display with backlight provides easy to read guidance
through all setup operations. An adjustable viewing angle makes it easy to read from
all practical locations.
Status indicators: Large and bright status indicators inform the user of important power source
conditions. The Remote lamp informs the user that the unit is under remote control.
The Overload lamp indicates that excessive current is being drawn at the output. The
Over temperature lamp illuminates when internal heat sink temperatures are too high.
The Hi Range indicator is lit any time the unit is switched to the high voltage range.
The Output On/Off indicator is on when the power source output relays are closed.
2.6 Special Features and Options
Controller Features
Parallel Operation: Two BPS75 or BPS90 units can be paralleled in a three-phase configuration (with one
master controller and one auxiliary unit) for 150KVA and 180KVA systems. Only the
master unit requires a controller in this setup. The auxiliary units are controlled through
the system interface connector.
Controller: Programmable controller front panel assembly.
Output Relay: Standard output relay feature to isolate power source from the load.
Output On/Off: The output relay can be used to quickly disconnect the load. A green status indicator
displays the status of the output relay.
Firmware / Software / Hardware Options
- HV Adds 400 V AC only output range.
-ES Emergency Shut off switch. This option key lock push button is installed on the front
panel of the master BPS if ordered with the BPS system. When pushed in, the main AC
contactor is opened disconnecting the AC input power to the BPS input transformer.
Note that the controller (and LCD display) will still be powered up but no power is
available to the amplifiers and there will be no output power either. The controller runs
off the LV supply, which must be turned off with the front panel breaker.
After the ES has been pushed, the provided key will be required to release it. Once the
ES button has been released, the BPS must be powered down using the front panel
circuit breaker and turned back on to start up again.
Note: Do not misplace the 2 keys provided, as no duplicates are available from CI. If
lost, the ES switch must be replaced. In that case, contact AMETEK Programmable
Power customer service. (service.ppd@ametek.com
-LAN Adds Ethernet interface (RJ45 connector) for local area network connection.
-LF Limits maximum output frequency to 500 Hz.
).
BPS Series User Manual M440077-01 Rev A 19
AMETEK Programmable Power
2.6.1 -HV Option Specifications
The -HV option provides an AC only output range of 0 to 400 Vac L-N. Speci fi cat i o ns unique to the -HV
option are shown in the table below.
Ranges (L-N): 0 -400 V
Resolution: 0.1 V
Accuracy: ± 0.25% of Full Scale / ± 1.0 Vac rms
Output Coupling AC only
Power: (total power for all phases, either range, at full scale voltage)
AC Mode 30 KVA45 KVA75 KVA90 KVA150 KVA180 KVA
Current:
Note: Current, maximum amps per phase available between 50 and 100 % of voltage range.
Single or three phase depending on model.
AC Mode
Single Phase
AC Mode
Three Phase
Peak Current:
AC Mode
Single Phase
AC Mode
Three Phase
Frequency:
Range: 45 Hz – 819 Hz
BPS30-1,
400V, single
phase
V Hi: 75A
BPS30-3,
400V, per
phase
V Hi: 25A
BPS30-1,
400V, single
phase
VHi: 225A
BPS30-3,
400V, per
phase
V Hi: 75A
with –LF option: 45 Hz – 500 Hz
BPS45-1,
400V, single
phase
VHi:112.5A
BPS45-3,
400V, per
phase
V Hi: 37.5A
BPS45-1,
400V, single
phase
VHi:337.5A
BPS45-3,
400V, per
phase
VHi:112.5A
N/A
BPS75-3,
400V, per
phase
V Hi: 62.5A
N/A
BPS75-3,
400V, per
phase
VHi:187.5A
N/A
BPS90-3,
400V, per
phase
V Hi: 75A
N/A
BPS90-3,
400V, per
phase
V Hi: 225A
N/A
BPS150-3,
400V, per
phase
V Hi: 125A
N/A
BPS150-3,
400V, per
phase
V Hi: 375A
N/A
BPS180-3,
400V, per
phase
V Hi: 150A
N/A
BPS180-3,
400V, per
phase
V Hi: 450A
Note: Output specificatio ns apply below the Current / Voltage rating lines shown in the following
V/I rating charts.
BPS Series User Manual M440077-01 Rev A 20
AMETEK Programmable Power
Current
(RMS)
75
75 A
-HV Range
20
100200300400
Voltage (RMS)
Figure 2-2: Sample BPS90 Voltage / Current Rating Chart, -HV Option – Max. Rating.
Figure 2-3: Sample BPS90 Voltage / Current Rating Chart, -HV Option – Derated.
BPS Series User Manual M440077-01 Rev A 21
AMETEK Programmable Power
2.6.2 -LF Option Specifications
The -LF option limits the maximum available output frequency to 500 Hz. All other specifications of the
BPS system remain unchanged if this option is installed.
2.7 Supplemental Specifications
Supplemental specifications are not warranted and generally reflect typical performance characteristics.
These characteristics have been checked on a type test basis only and are not verified on each unit
shipped. They are provided for reference only.
2.7.1 Output
Output Parameter BPS30 – BPS180
Voltage:
Slew rate: > 0.5 V/micro sec
Stability: 0.25 % over 24 hour period at constant line, load and temperature.
Settling time: < 0.5 msec
Frequency:
Temperature
coefficient:
5ppm per degree C
Stability:
Current:
Constant Power Mode: Operation at higher currents but constant power is possible from 80% of Voltage
15 ppm per year
range (125% of max. current) declining to 100% of maximum current at 100 % of
voltage range for short periods of time or at reduced ambient temperatures. (< 15
mins @ 30° C). See Figure 2-1 and Figure 2-4.
2.7.2 Acoustic Noise Levels
Acoustic Noise: Measured at a distance of one meter. (3 ft.)
Front 63 dBA at no load to 68 dBA at full load.
Back 65 dBA at no load to 72 dBA at full load
BPS Series User Manual M440077-01 Rev A 22
AMETEK Programmable Power
3. Unpacking and Installation – BPS30 and BPS45 Models.
CAUTION: There are two basic hardware configuration models of the BPS Series power source
with different hookup instructions. Verify that the model being installed is one of the models
indicated above. See section 3.0 for BPS75, BPS90, BPS150 and BPS180 versions.
3.1 Unpacking
Inspect the unit for any possible shipping damage immediately upon receipt. If damage is evident, notify
the carrier. DO NOT return an instrument to the factory without prior approval. Do not destroy the
packing container until the unit has been inspected for damage in shipment. If possible, retain the container (wooden crate) in the event the system ever has to be returned to the factory for either repair or
upgrades
WARNING: This version power source weighs approximately 2150 lbs / 975 Kg
approximately
2475 lbs / 1123 Kg
the location (floor) in which the BPS Series unit will be installed can support the weight of the
unit.
. Obtain adequate help when moving the unit. Make sure
3.2 Power Requirements
The BPS Series power Source has been designed to operate from a three-phase, three wire (Wye or Delta)
AC input line. A protective earth connection is required as well. (PE).
Available three-phase input settings are 208 V
400), or 480 V
(option -480).
LL
(option -208), 230 V
LL
(option -230), 400 V
LL
(option -
LL
Figure 3-1: The BPS30 or BPS45 Power Source
CAUTION: Do not connect 400 or 480V into a unit set for 208 or 230V unit, the result could be a
severely damaged unit. Always check the input rating on the model number tag before connecting
AC input power. Consult factory if input settings have to be changed.
BPS Series User Manual M440077-01 Rev A 23
AMETEK Programmable Power
3.3 Mechanical Installation
The BPS power source is completely self-contained power sources. They are to be used free standing on
a solid surface. The units are fan cooled, drawing air in from the front and exhausting at the rear. The
front and back of each unit must be kept clear of obstruction and a 6” clearance must be maintained to the
rear. Special consideration of overall airflow characteristics and the resultant internal heat rise must be
considered at all times to avoid self heating and over temperature problems.
3.4 AC Input Connections and Wiring
Three-phase Delta or Y AC input voltage of suffici ent amperage (consult AC input specifications for
maximum AC current per phase) is required to power the BPS Series.
Note: AC power should be routed through a properly sized and rated three-phase PROTECTIVE
CIRCUIT BREAKER or similar branch circuit protection device with disconnect capability.
This will protect building wiring and other circuits from possible damage or shutdown in case
of a system problem. It will also facilitate removing AC input power to the BPS system in case
of service or reconfiguration requirements.
Note: AC input wiring and connections must conform to local electrical safety codes that apply.
Always consult a qualified electrician prior to installation of any BPS System.
AC input connections are to be made directly to the input fuse block. The input fuse block is located on
the lower left hand corner of the front of the BPS30 and BPS45 chassis. To access the input fuse
connection block, the protective front cover needs to be removed first.
CAUTION: Always disconnect any input power completely when removing any
protective cover and allow the internal capacitors to fully discharge (minimum of 15
mins) before removing any cover.) See Figure 4-2 for details.
No wiring for AC input connections is provided with the BPS Series and must be provided by the end
user or installer. Input wiring should be entered through the right hand side (when facing the back of the
BPS cabinet, see Figure 4-4) wire access opening located at the rear bottom of the BPS chassis. A wire
channel (marked as [2] in figure below) is provided below the input transformer to allow the input wiring
to be routed to the front of the unit where the connections are to be made.
WARNING: The power source's input connection wiring gage (size)
must be sized for the maximum input current rating to ensure user safety and
avoid possible power source damage, regardless of the actual output load.
BPS Series User Manual M440077-01 Rev A 24
AMETEK Programmable Power
Figure 3-2: Location of BPS30 and BPS45 AC Input Fuse Block and Chassis Ground Connection -
Front View, Panel Removed
Note: To comply with product safety requirements, EARTH GROUND must be connected to the
chassis of the AC power system using the ground stud located directly below the AC input fuse
block. Use a Green/Yellow ground wire.
Note: DO NOT USE THE NEUTRAL CONNECTION OF A 3 PHASE Y AC POWER
CONNECTION IN PLACE OF A TRUE EARTH GROUND CONNECTION. AC power
system neutrals cannot be used for protective earth ground.
The mains source must have a current rating equal to or greater than the input fuses and the input wiring
must be sized to satisfy the applicable electrical codes. The front cover must be re-installed prior to use
and the strain relief provisions located at the rear bottom of the unit must be used to maintain protection
against hazardous conditions.
BPS Series User Manual M440077-01 Rev A 25
AMETEK Programmable Power
BPS Series User Manual M440077-01 Rev A 26
AMETEK Programmable Power
3ø
AC Line
Input
PROTECTIVE
GROUND
Figure 3-3: BPS30 and BPS45 Series AC Input Connection Diagram (Rear view)
EXTERNAL
CIRCUIT
BREAKER
AC MAINS
3 PHASE
BPS Series User Manual M440077-01 Rev A 27
AMETEK Programmable Power
The input power cables and protective circuit breaker used must be large enough to handle the input
current and input voltage of the power source and must conform to local electrical codes. Consult a
qualified electrician prior to installation. Table 3-1 shows the size of the cables that may be used per BPS
cabinet. Note that wires must be sized to accommodate the worst-case maximum current that may occur
under low line conditions. Local electrical codes may also require different wire types and sizes. These
ratings should also be used when selecting a circuit breaker or equivalent disconnect device.
Cable lengths must not exceed twenty-five (25) feet. For lengths greater than 25 feet, calculate the
voltage drop from the following formula:
2 X DISTANCE X CABLE RESISTANCE PER FT. X CURRENT = VOLT DROP
Table 3-1: Suggested Input Wiring Sizes for each BPS Cabinet *
Nominal Line
Voltage
480 V 75 A
400 V 90 A
230 V 157 A
208 V 175 A
Load Current @
low line
6 AWG 26.24 13.3
RMS
4 AWG 41.74 21.1
RMS
2 AWG 66.36 33.6
RMS
1 AWG 83.69 42.4
RMS
Wire Gauge (US) Circular Mils
(Kcmils)
Metric (mm2)
* Using high temperature rated wire. Always consult the National Electrical Code and local code regulations for
proper rating and size of wire cabling prior to installation.
CAUTION: Capacitors in the power source may hold a hazardous electrical charge even if the
power source has been disconnected from the mains supply. Allow capacitors to discharge to a
safe voltage before touching exposed pins of mains sup ply connectors.
Power modules need at least 15 Minutes to discharge to safe levels before they can be removed.
3.5 AC On/Off Circuit Breaker on BPS Series front panel.
It is important to understand the purpose and operation of the On/Off circuit breaker of the BPS Series
located on the lower left side of the front panel. This is a 2A rated breaker that is used to engage and
protect the LV Power supply of the BPS chassis only. The LV Power supply provides DC bias power to
the entire BPS system. The AC input power is routed through a set of three AC line fuses (F1, F2 and F3)
located in the lower left bottom corner of the BPS. (See Figure 4-2 for fuse locations). These fuses
protect the three BPS amplifiers and the AC input transformer from excessive input currents. The AC
input power is connected to the input transformer through a large three-pole contactor. Removing AC
power to the LV Power Supply by opening the front panel circuit breaker (moving the lever to the down
(OFF) position) will cause this contactor to lose its coil voltage and will result in it opening and
disconnecting the input transformer and amplifier from AC mains input.
Note: If any system failure has occurred on any part of the BPS system, AC input power must be
removed immediately and not restored until the system has been inspected by a qualifier
service technician. Repeatedly applying power may cause further damage.
Always turn off the On/Off Circuit breaker before re-applying AC input power .
CAUTION: The AC input fuses can only be checked is the BPS unit is completely de-
energized and disconnected from any AC power input.
BPS Series User Manual M440077-01 Rev A 28
AMETEK Programmable Power
Note: Under no circumstances should AC input power be applied if one or more of the AC input
line fuses have failed and opened up.
Figure 3-4: BPS30 or BSP45 Rear Panel
BPS Series User Manual M440077-01 Rev A 29
AMETEK Programmable Power
3.6 Output Connections
3.6.1 Output Wiring
The output terminal blocks, TB1A and TB1B are located at the front of the unit behind the bottom access
panel. See Figure 4-2 for details.
Three phase output line connections are made to terminal block TB1A. The phase outputs are labeled A,
B and C. The neutral connection (if needed) can be made on terminal block TB1B. If the model used is
a BPS30-1 or BPS45-1 with single-phase capability, the single phase A output connection is available on
TB1B as well. Note that the neutral for either single or three-phase mode is always located on TB1B.
The neutral connection is always required for single-phase output BPS30-1 or BPS30-3 and may be used
if needed for the EUT for BPS30-3 and BPS45-3 models with three-phase output modes.
The external sense inputs allow the power system output voltages to be monitored directly at the load and
must be connected at TB2 when the sense is programmed for external. The external sense input does not
have to be connected when Internal Sense is programmed. The external sense wires are to be connected
to TB2 on the rear panel and should be run using a twisted shielded cable. See Figure 4-4 for location of
TB2 and Figure 4-5 for shield connection detail.
Note: For External Sense connection, a shielded cable MUST be used with the shield connected to
chassis ground at the Ext. Sense connector. (See Figure 4-5).
External sense is recommended for multi-cabinet systems is the output wiring from the cabinets to the
common output terminal block supplied is not of equal length.
Figure 3-5: External sense cable shield connection to chassis ground
Note: The output of the power source is isolated from the input line and floating with respect to
chassis ground. If needed, either side (HI or LO) may be grounded.
If the EUT changes frequently, you may want to consider using some quick disconnect scheme external
to the BPS so it will not be necessary to power down the BPS and remove the front covers. This can take
the form of a panel-mounted socket (1 or 3 phase) of sufficient current and voltage rating. (Not supplied
with BPS)
The output power cables must be large enough to prevent a total voltage drop exceeding 1% of the rated
output voltage between the power source and the load. Table 4-2 shows the size of the cables that may
be used. Note that wires must be sized to accommodate the maximum current that is available. This may
BPS Series User Manual M440077-01 Rev A 30
AMETEK Programmable Power
be a function of the voltage range and phase mode on some BPS models. If the BPS has more than one
output voltage range, size the wires for the lowest available voltage range as the currents will be highest
in that range.
Cable lengths must not exceed twenty-five (25) feet. For lengths greater than 25 feet, calculate the
voltage drop from the following formula:
2 X DISTANCE X CABLE RESISTANCE PER FT. X CURRENT = VOLT DROP
Note: Use high temperature rated wire. Always consult the National Electrical Code and local code
regulations for proper rating and size of wire cabling prior to installation.
BPS Series User Manual M440077-01 Rev A 31
AMETEK Programmable Power
3.6.2 Output Terminal Blocks
The BPS30-3 and BPS45-3 have two output terminal blocks, TB1A and TB1B. The BPS30-1 and
BPS45-1 only has one output terminal block, TB1B. The terminal blocks are large enough to
accommodate the recommended wire gauge sizes shown in Table 4-2. The terminal blocks are located in
the lower right corner on the front of the unit. The front panel needs to be removed to access these
terminal blocks.
CAUTION: REMOVE ALL INPUT POWER TO THE BPS BEFORE REMOVING
THE FRONT PANEL.
The correct standard size Allen wrenches for connecting o u t put wi ri n g t o TB1A and/o r TB 1B are
supplied with each BPS in the ship kit. Look for a brown envelope. If the correct tools cannot be found,
contact AMETEK Programmable Power customer service at service@programmablepower.com
.
Terminal block TB1B always provides the output neutral connection, regardless of the phase mode (1 or
3 phase output mode).
In single-phase mode, phase A output is provided through terminal 1 of TB1B.
In three-phase mode, phase A, B and C outputs are provided trough terminals 1, 2 and 3 of TB1A
respectively.
Connector Terminal Mode Output
TB1A 1 3 Phase Phase A
2 3 Phase Phase B
3 3 Phase Phase C
TB1B 1 1 Phase Phase A
2 1 and 3 Phase Neutral
Table 3-3: Output Terminal connections.
Figure 3-6: Location of BPS30 and BPS45 Output Terminals (Front view)
Figure 3-7 shows the required output connections for a BPS30-1, BPS45-1 in single-phase mode output
configuration (rear-view perspective). See section 3.6.3 for the BPS30-3 or BPS45-3 in three-phase
mode.
Always disconnect all input power from the BPS before removing the front panel cover that provides
access to the input and output terminal connections. Route the wires from the back of the BPS to the
front in the provided cable guides.
Figure 4-7 shows the required output connections for a BPS30-3 and BPS45-3 ordered in three-phase
mode output configuration (rear- vie w perspective). See section 3.6.2 for the BPS30- 1 and BPS 45 -1
ordered in single-phase mode.
Always disconnect all input power from the BPS before removing the front panel cover that provides
access to the input and output terminal connections. Route the wires from the back of the BPS to the
front in the provided cable guides.
4. Unpacking and Installation – BPS75 / BPS90 / BPS150 and BPS180
Models.
CAUTION: There are two basic models of the BPS Series power source hardware with different
hookup instructions. Verify that the model being installed is one of the models indicated above.
See section 3.0 for BPS30 and BPS45 versions.
4.1 Unpacking
Inspect the unit for any possible shipping damage immediately upon receipt. If damage is evident, notify
the carrier. DO NOT return an instrument to the factory without prior approval. Do not destroy the
packing container until the unit has been inspected for damage in shipment. If possible, retain the container (wooden crate) in the event the system ever has to be returned to the factory for either repair or
upgrades
WARNING: This version BPS power source weighs approximately 2150 lbs /
975 Kg approximately
2475 lbs / 1123 Kg
moving the unit. Make sure the location (floor) in which the BPS Series unit(s) will be installed
can support the weight of the unit(s).
). Obtain adequate help and proper equipment when
4.2 Power Requirements
The BPS Series power Source has been designed to operate from a three-phase, three wire (Wye or Delta)
AC input line. A protective earth connection is required as well. (PE).
Available three-phase input settings are 208 V
400), or 480 V
CAUTION: Do not connect 400 or 480V into a unit set for 208 or 230V unit, the result could be a
severely damaged unit. Always check the input rating on the model number tag before connecting
AC input power. Consult factory if input settings have to be changed.
(option -480).
LL
(option -208), 230 V
LL
(option -230), 400 V
LL
(option -
LL
BPS Series User Manual M440077-01 Rev A 35
AMETEK Programmable Power
Figure 4-1: BPS75/BPS90 Power Source Photo
BPS Series User Manual M440077-01 Rev A 36
AMETEK Programmable Power
4.3 Mechanical Installation
The BPS75 and BPS90 products are completely self-contained power sources. They are to be used free
standing on a solid surface. The units are fan cooled, drawing air in from the front and exhausting at the
rear. The front and back of each unit must be kept clear of obstruction and a 6” clearance must be
maintained to the rear. Special consideration of overall airflow characteristics and the resultant internal
heat rise must be considered at all times to avoid self heating and over temperature problems.
4.4 AC Input Connections and Wiring
Three-phase Delta or Y AC input voltage of suffici ent amperage (consult AC input specifications for
maximum AC current per phase) is required to power the BPS Series.
Note: AC power should be routed through a properly sized and rated three-phase PROTECTIVE
CIRCUIT BREAKER or similar branch circuit protection device with disconnect capability.
This will protect building wiring and other circuits from possible damage or shutdown in case
of a system problem. It will also facilitate removing AC input power to the BPS system in case
of service or reconfiguration requirements.
Note: AC input wiring and connections must conform to all national and local electrical safety
codes that may apply. Always consult a qualified electrician prior to installation of any BPS
System.
AC input connections are to be made directly to the input fuse block. The input fuse block is located on
the lower left hand corner of the front of the BPS chassis. To access the input fuse connection block, the
protective front cover needs to be removed first .
CAUTION: Always disconnect any input power completely when removing any
protective cover and allow the internal capacitors to fully discharge (minimum of 15
mins) before removing any cover.) See Figure 4-2 for details.
No wiring for AC input connections is provided with the BPS Series and must be provided by the end
user or installer. Input wiring should be entered through the right hand side (when facing the back of the
BPS cabinet, see Figure 4-4) wire access opening located at the rear bottom of the BPS chassis. A wire
channel (marked as [2] in figure below) is provided below the input transformer to allow the input wiring
to be routed to the front of the unit where the connections are to be made.
WARNING: The power source's input connection wiring gage (size) must be
sized for the maximum input current rating to ensure user safety and avoid
possible power source damage, regardless of the actual output load.
BPS Series User Manual M440077-01 Rev A 37
AMETEK Programmable Power
Figure 4-2: Location of BPS75 and BPS90 AC Input Connection Block (TB3) and Chassis Ground Connection
Note: To comply with product safety requirements, EARTH GROUND must be connected to the
chassis of the AC power system using the ground stud located directly below the AC input fuse
block. Use a Green/Yellow ground wire.
Note: DO NOT USE THE NEUTRAL CONNECTION OF A 3 PHASE Y AC POWER
CONNECTION IN PLACE OF A TRUE EARTH GROUND CONNECTION. AC power
system neutrals cannot be used for protective earth ground.
The mains source must have a current rating equal to or greater than the input fuses and the input wiring
must be sized to satisfy the applicable electrical codes. All covers must be re-installed prior to use and
the strain relief provisions located at the rear bottom of the unit must be used to maintain protection
against hazardous conditions.
BPS Series User Manual M440077-01 Rev A 38
AMETEK Programmable Power
Figure 4-3: BPS75-3 or BPS90-3 AC Input Connection Diagram (Rear view)
BPS Series User Manual M440077-01 Rev A 39
AMETEK Programmable Power
The input power cables and protective circuit breaker used must be large enough to handle the input
current and input voltage of the power source and must conform to national and local electrical codes.
Consult a qualified electrician prior to installation. Error! Reference source not found. shows the size
of the cables that may be used per each BPS cabinet. Note that wires must be sized to accommodate the
worst-case maximum current that may occur under low line conditions. Local electrical codes may also
require different wire types and sizes. These ratings should also be used when selecting a circuit breaker
or equivalent disconnect device.
Cable lengths must not exceed twenty-five (25) feet. For lengths greater than 25 feet, calculate the
voltage drop from the following formula:
2 X DISTANCE X CABLE RESISTANCE PER FT. X CURRENT = VOLT DROP
Table 4-1: Suggested Input Wiring Sizes for each RS Cabinet *
* Data shown for use of high temperature (100° C) rated stranded copper wire, unbundled and not installed in
conduit. Adjust wire gauge for Aluminum wire type. Always consult the National Electrical Code and local code
regulations for proper rating and size of wire cabling prior to installation.
CAUTION: Capacitors in the power source may hold a hazardous electrical charge even if the
power source has been disconnected from the mains supply. Allow capacitors to discharge to a
safe voltage before touching exposed pins of mains supply connectors. Power modules need at
least 15 minutes to discharge to safe levels before they can be removed.
4.5 AC On/Off Circuit Breaker on BPS Series front panel.
It is important to understand the purpose and operation of the On/Off circuit breaker of the BPS Series
located on the lower left side of the front panel. This is a 2.5A rated breaker that is used to engage and
protect the two LV Power supplies of the BPS chassis only. The LV Power supplies provide DC bias
power to the entire BPS system. The AC input power is routed through a set of six AC line fuses (F1 –
F6) located in the lower rear left bottom corner of the BPS. (See Figure 4-2 for fuse locations). These
fuses protect the six BPS amplifiers and the AC input transformer from excessive input currents. The AC
input power is connected to the input transformer through a large three-pole contactor. Removing AC
power to the LV Power Supply by opening the front panel circuit breaker (moving the lever to the down
(OFF) position) will cause this contactor to lose its coil voltage and will result in it opening and
disconnecting the input transformer and amplifier from AC mains input.
Note: If any BPS system failure has occurred on any part of the BPS system, AC input power must
be removed immediately and not restored until the system has been inspected by a qualifier
service technician. Continued attempts to restart system can lead to further damage. Always
turn off the On/Off Circuit breaker before re-applying AC input power.
BPS Series User Manual M440077-01 Rev A 40
AMETEK Programmable Power
CAUTION: The AC input fuses can only be checked is the BPS unit is completely de-
energized and disconnected from any AC power input.
Note: Under no circumstances should AC input power be applied if one or more of the AC input
line fuses have failed and opened up.
Figure 4-4: BPS75-3 or BPS90-3 Rear Panel – External Sense connector location.
BPS Series User Manual M440077-01 Rev A 41
AMETEK Programmable Power
4.6 Output Connections
4.6.1 Output Wiring
The output terminal blocks, TB1A and TB1B are located at the lower rear of the unit behind the bottom
access panel. See Figure 4-2 for details.
Three phase output line connections are made to terminal block TB1A. The phase outputs are labeled A,
B and C. The neutral connection (if needed) can be made on terminal block TB1B. The neutral
connection is always required to connect Y loads or for connecting a single phase load to Phase A only.
The external sense inputs allow the power system output voltages to be monitored directly at the load and
must be connected at TB2 when the sense is programmed for external. The external sense input does not
have to be connected when Internal Sense is programmed. The external sense wires are to be connected
to TB2 on the rear panel and should be run using a twisted shielded cable. See Figure 4-4 for location of
TB2 and Figure 4-5 for shield connection detail.
Note: For External Sense connection, a shielded cable MUST be used with the shield connected to
chassis ground at the Ext. Sense connector. (See Figure 4-5).
External sense is recommended for multi-cabinet systems is the output wiring from the cabinets to the
common output terminal block supplied is not of equal length.
Figure 4-5: External sense cable shield connection to chassis ground
Note: The output of the power source is isolated from the input line and floating with respect to
chassis ground. If needed, either side (HI or LO) may be grounded.
If the EUT changes frequently, you may want to consider using some quick disconnect scheme external
to the BPS so it will not be necessary to power down the BPS and remove the rear covers. This can take
the form of a panel-mounted socket (1 or 3 phase) of sufficient current and voltage rating. (Not supplied
with BPS)
The output power cables must be large enough to prevent a total voltage drop exceeding 1% of the rated
output voltage between the power source and the load. Table 4-2 shows the size of the cables that may
be used. Note that wires must be sized to accommodate the maximum current that is available. This may
be a function of the voltage range and phase mode on some BPS models. If the BPS has more than one
output voltage range, size the wires for the lowest available voltage range as the currents will be highest
in that range.
BPS Series User Manual M440077-01 Rev A 42
AMETEK Programmable Power
Cable lengths must not exceed twenty-five (25) feet. For lengths greater than 25 feet, calculate the
voltage drop from the following formula:
2 X DISTANCE X CABLE RESISTANCE PER FT. X CURRENT = VOLT DROP
* Data shown for use of high temperature (100° C) rated stranded copper wire, unbundled and not installed
in conduit. Adjust wire gauge for Aluminum wire type.
Note: Use high temperature rated wire. Always consult the National Electrical Code and local code
regulations for proper rating and size of wire cabling prior to installation.
BPS Series User Manual M440077-01 Rev A 43
AMETEK Programmable Power
4.6.2 Output Terminal Blocks
The BPS has two output terminal blocks, TB1A and TB1B. The terminal blocks are large enough to
accommodate the recommended wire gauge sizes shown in Table 4-2. The terminal blocks are located in
the lower right corner on the back of the unit when facing the rear. The rear access panel at the bottom of
the chassis needs to be removed to access these terminal blocks.
CAUTION: REMOVE ALL INPUT POWER TO THE BPS BEFORE REMOVING
THE REAR ACCESS PANEL.
The correct standard size Allen wrenches for connecting o u t put wi ri n g t o TB1A and/o r TB 1B are
supplied with each BPS in the ship kit. Look for a brown envelope. If the correct tools cannot be found,
contact AMETEK Programmable Power customer service at service.ppd@ametek.com
.
Terminal block TB1B provides the output neutral connection of the three phase WYE output.
Phase A, B and C outputs are provided trough terminals 1, 2 and 3 of TB1A respectively.
Connector Terminal Mode Output
TB1A 1 3 Phase Phase A
2 3 Phase Phase B
3 3 Phase Phase C
TB1B 1 - 4 3 Phase Neutral
Table 4-3: Output Terminal connections.
Figure 4-6: Location of Output Terminals (Rear view)
BPS Series User Manual M440077-01 Rev A 44
AMETEK Programmable Power
4.6.3 Output Wiring Diagram
Figure 4-7 shows the required output wiring connections for a BPS75 or BPS90 (rear pa nel view).
Always disconnect all input power from the BPS before removing the rear terminal block access panel.
Route the load wires through the strain relief clamps. Depending on wire size required, it may be
necessary to use two strain relief holes with 2 wires through each as shown.
Figure 4-7: BPS75-3 or BPS90-3 Output Wiring (Rear panel view)
BPS Series User Manual M440077-01 Rev A 45
AMETEK Programmable Power
4.6.4 BPS150-3 or BPS180-3 Parallel Output Wiring Diagram
Figure 4-8 shows the required output connections for a two chassis dual chassis parallel mode output
configuration (rear view). Always disconnect all input power from the BPS system before removing the
rear panel cover that provides access to the input and output terminal connections. Two chassis BPS
systems are shipped with external output terminal blocks that enable the output wiring from two chassis to
be combined, providing a single point of connection to the EUT. These blocks must be installed in a
suitable safety enclosure. It is important to match the length of the output wiring to the common output
terminal block to ensure current sharing between the two power supplies.
If two or more BPS chassis are used to form a single power system, the outputs of all chassis need to be
combined (paralleled by phase). This can be done directly at the EUT if convenient or using the provided
heavy-duty terminal blocks. Two blocks are provided with multi-chassis systems, one 2-position block
and one 3-position block. These blocks allow up to f our w i res to be combined into one larger wire gauge
size wire. The outputs of the 2 or 3 BPS chassis are connected on one side of these blocks (Phase A,B and
C into the 3 position terminal and the neutral into the 2 position terminal.). The EUT can be connected to
the other side. Note that the wire size to the EUT should be sized up to accommodate the double or triple
currents per phase.
The dimensions of the typical supplied terminal blocks are shown in Figure 4-9.
Note: Even if the EUT is a three-phase delta input, the output neutrals of the BPS chassis' must be
connected together for the system to work correctly.
Figure 4-9: Ship kit Terminal Block dimensions
BPS Series 47
User Manual AMETEK Programmable Power
4.7 Connectors - Rear Panel
A number of connectors are located along the center rear panel. These connectors are in a recessed area to
protect them from shipment damage.
4.7.1 System Interface
WARNING: The system interface connectors are for use with AMETEK Programmable Power
supplied cables, and only between California Instruments equipment.
A set of two identical System Interface connectors, P8 and P9 ( TBD ) is located on the rear pa nel of each
BPS chassis. The system interface is used to connect the multiple BPS power sources in a
Master/Auxiliary configuration to create BPS150 or BPS180 models. In these configurations, only the
Master BPS power source has a built-in controller and front panel.
P8 / P9 Description
1 OUTP: Output ON. Controls state of output relay
2 N/C
3 N/C
4 N/C
5 COM: Common. Signal return.
6 OT: Over temperature. Indicates over temperature condition.
7 N/C
8 CLB: Current Limit B. Programmed current limit reference for phase B
9 CSA: Current Sum Phase A
10 CSC: Current Sum Phase C
11 FLT A: Amplifier Fault Phase A
12 FLT C: Amplifier Fault Phase C
13 XFMR: Optional voltage range select. (-HV or -XV option)
14 PARALLEL: Parallel operation control.
15 INPUT ON: Input power status
16 A ERR LO: Error Signal Phase A, low
17 B ERR HI: Error Signal Phase B, high
18 N/C
19 C ERR LO: Error Signal Phase C, Low
20 300 VRNG: 300 V AC Range Select
21 COM: Common. Signal return.
22 /REM OFF: Remote Off Control not
23 COM: Common. Signal return
24 FLK/BYP: Flicker / Bypass OMNI control
25 /OVL: Overload not
BPS Series 48
User Manual AMETEK Programmable Power
P8 / P9 Description
26 CLA: Current Limit A. Programmed current limit reference for phase A
27 CLC: Current Limit C. Programmed current limit reference for phase C
28 CSB: Current Sum Phase B.
29 N/C
30 FLT B: Amplifier Fault Phase B
31 N/C
32 DC: DC mode control
33 INP OFF: Input power control
34 A ERR HI: Error Signal Phase A, high
35 N/C
36 B ERR LO: Error Signal Phase B, low
37 C ERR HI: Error Signal Phase C, high
Table 4-4: System Interface Connectors
4.7.2 Analog Input Connector
Input screw-terminal strip. Functions are called out on rear panel decal. Table shows connections from left
to right when standing at the rear of the BPS cabinet.
Pin Description
1 RPV HI. INPUT: Analog input for External Modulation
2 RPV Lo. INPUT: return.
3 EXT SYNC HI INPUT: Analog input for external sync mode.
4 EXT SYNC Lo INPUT: return.
5 RI: INPUT: Remote Inhibit. (See paragraph 4.10.)
6 RI: INPUT: return.
Table 4-5: Analog Interface Connector
BPS Series 49
User Manual AMETEK Programmable Power
4.7.3 BNC Connectors
BNC connectors. Functions are called out on rear panel decal. Table shows connections from left to right
when standing at the rear of the BPS cabinet.
Table 4-6: BNC Connectors
BNC Description
1 Trigger Input (TTL input)
2 Trigger Output (TTL output) (Same signal connection as Function Strobe. Some units may not
have this output connected. If you don’t get an output trigger on this BNC, use the Function Strobe
BNC instead.)
3 Function Strobe (TTL output) (Same signal connection as Trigger Output)
4 Clock (TTL output on Master / TTL input on Auxiliary). Not available on all models.
5 Lock (TTL output on Master / TTL input on Auxiliary) .Not available on all models.
6 Emergency Shut off inter connect. Not required on single master systems.
Table 4-7: BNC Connectors
4.7.4 External Sense Connector
Pin Description
1 Phase A sense
2 Phase B sense
3 Phase C sense
4 Neutral sense
Table 4-8: External Sense Connector
BPS Series 50
User Manual AMETEK Programmable Power
4.7.5 RS232C Serial Interface Connector
An RS232 serial interface connector is located on the rear panel on all models.
Table 4-9: RS232 Connector pin out – BPS Series with RS232 and USB.
The BPS Series models RS232 interface use a straight through DB9 male to DB9 female serial cable,
which is supplied in the BPS ship kit for these models.
BPS Series 51
User Manual AMETEK Programmable Power
4.7.6 USB Interface
A standard USB Series B device connector is located on the rear panel for remote control. A standard
USB cable between the AC Source and a PC or USB Hub may be used.
Note: Use of the USB port to control more than one power source from a single PC is not
recommended, as communication may not be reliable. Use GPIB interface for multiple power
source control.
Figure 4-10: USB Connector pin orientation.
Pin Name Description
1 VBUS +5 VDC
2 D- Data 3 D+ Data +
4 GND Ground
Table 4-10: USB Connector pin out.
BPS Series 52
User Manual AMETEK Programmable Power
A
4.7.7LAN Interface – RJ45
An optional RJ45 Ethernet 10BaseT connector is located on the rear panel for remote control. A standard
RJ45 UTP patch cord between the AC Source and a network Hub may be used to connect the AC source
to a LAN. For direct connection to a PC LAN card, a crossover RJ45 cable is required. Consult your
network administrator for directions on connecting the AC source to any corporate LAN.
If the –LAN Ethernet interface option is present, the MAC Address (Media Access Control) of the
Ethernet port is printed on the serial tag of the power source. The serial tag is located on the rear panel of
the unit.
For information on how to set up a network connection or a direct PC connection using the LAN interface,
refer to the BPS Series Programming Manual distributed in Adobe PDF format on the CD ROM provided.
LAN
Pin Ethernet TPE
10BaseT/100BastT/1000BaseT
1 Transmit/Receive Data 0 +White with green stripe White with orange stripe
2 Transmit/Receive Data 0 -Green with white stripe or
3 Transmit/Receive Data 1 +White with orange stripe White with green stripe
4 Transmit/Receive Data 2 +Blue with white stripe or
5 Transmit/Receive Data 2 -White with blue stripe White with blue stripe
6 Transmit/Receive Data 1 -Orange with white stripe
7 Transmit/Receive Data 3 +White with brown stripe or
8 Transmit/Receive Data 3 -Brown with white stripe or
Table 4-11: RJ45 LAN Connector pin out.
EIA/TIA 568
solid green
solid blue
or solid orange
solid brown
solid brown.
EIA/TIA 568B
Crossover
Orange with white stripe or
solid orange
Blue with white stripe or
solid blue
Green with white stripe or
solid
White with brown stripe or
solid brown
Brown with white stripe or
solid brown
BPS Series 53
User Manual AMETEK Programmable Power
4.8 Multiple Cabinet Power Up/Down Procedures
For all multi-cabinet BPS Series configurations (BPS150 through BPS180), the following Power Up
(Turn on) and Power Down (Turn off) proc edu res sho ul d be ob ser ved for best pe rf o rmance.
4.8.1 Power Up Procedure
Follow these steps:
1. Turn on each of the Auxiliary units using the front panel circuit breaker, one at a time. The exact
order for turning on the auxiliary units is not important. Note that the bias supplies of each of the
auxiliary cabinets will power up but not the actual amplifiers. This is because the auxiliary units
are waiting for the turn on signal from the master unit.
2. Once all auxiliary units are on , turn on the MASTER unit LAST using the front panel circuit
breaker. The master unit will go through an initialization process and power up itself plus the
auxiliary units.
3. Allow 20 to 30 seconds for the turn on sequence to complete before attempting to communicate
with the system.
4.8.2 Power Down Procedure
The power-down / shutdown sequence for the system is the reverse of the power-up / turn-on sequence.
This means the MASTER unit is turned off FIRST. Once the MASTER shuts down, all auxiliary units’
main AC input power contactors will open up automatically. They still need to be turned off individually
using the front panel circuit breaker. This will shut down their bias supplies as well.
Follow these steps:
1. Disconnect the EUT by opening the BPS output relay. Use the Output On/Off button on the
master unit front panel or send the “OUTPUT 0” command over the bus to do so.
2. Turn off the MASTER unit FIRST using the front panel circuit breaker. The master unit will
disengage the main AC power input contactors of all auxiliary units at this time.
3. Next, turn off each of the Auxiliary units using the front panel circuit breaker, one at a time. The
exact order for turning off the auxiliary units is not important.
BPS Series 54
User Manual AMETEK Programmable Power
4.9 Basic Initial Functional Test
CAUTION: Work carefully when performing these tests; hazardous voltages are present on
the input and output during this test.
Refer to Figure 4-11 for the required functional test set up. Proceed as follows to perform a basic function
check of the power system:
1. Verify the correct AC line input rating on the nameplate of the BPS unit(s) and make sure the correct
three-phase line voltage is wired to the input of the BPS before applying input power.
2. Connect a suitable resistiv e or other type load to the output of the BPS. The load resistance value will
depend on the voltage range you plan to check. Make sure the power resistor has sufficient power
dissipation capability - up to 30 KW for full load test on one phase of BPS90 models and that the load
used does not exceed the maximum power rating of the BPS. For three phase configurations, this test
can be performed on one phase at a time if needed.
3. Connect an oscillo scope and DMM / voltmeter to the AC source output. Set both for AC mode.
4. If the correct voltage is present, turn on the BPS unit(s) by closing the On/Off circuit breaker on the
front panel. For multi-cabinet systems, turn on the auxiliary unit first and wait for them to cycle on,
then turn on the master unit.
5. If the BPS has more than one available output voltage range, go to the PROGRAM 1 screen and
select the desired voltage range. The output mode can be set from the PROGRAM 2 screen (use the
MORE soft key or press the PROGR function key again). Select AC mode.
6. Set the output voltage to 0 volt and close the output relay with the OUTPUT ON/OFF button. There
should be little or no output although the DMM may show a noise level, especially if the DMM is in
auto ranging mode.
7. Move the curso r to the VOLTAGE field in the PROGRAM 1 screen and either use the keyboard to
program a small voltage (20 VAC) or slew the voltage up slowly with the knob. Observe the DMM
reading. The reading should track the programmed voltage.
8. Also monitor the scope. The output should be a sinusoidal voltage waveform.
9. If the output tracks, increase the voltage till you reach 80 % of the voltage range or more. Check the
output voltage reading and waveform .
10. Select the MEASUREMENT 1 screen by pressing the MEAS button. The output voltage, current and
power will be displayed. For three phase configurations, use the PHASE button to select the øABC
display mode. This will show the voltage, current and power for all three phases. If all phases are
loaded equally, the same current and power should be visible for all three unless the voltages are not
programmed to the same level. If only one phase is loaded, current and power will only be shown for
the loaded phase.
In the unlikely event the power source does not pass the functional test, refer to the calibration procedure
in Section 7 or call AMETEK Programmable Power customer service department for further assistance.
BPS Series 55
User Manual AMETEK Programmable Power
Figure 4-11: Functional Test Setup.
4.10 Remote Inhibit / Remote Shutdown
It may be necessary to provide a remote shutdown of the AC output of the BPS. The external remote
inhibit input may be used for this purpose (RI). This input is also referred to as remote shutdown.
The default mode of operation for the RI input is a contact closure between pins 5 and 6 (return) of the
rear panel screw-terminal strip. This will open the output relay of the BPS.
BPS Series 56
User Manual AMETEK Programmable Power
It is possible to reverse the polarity of the RI input. This requires the use of the following bus command:
OUTPut:RI[:LEVel] HIGH /* Sets RI polarity to active high.
OUTPut:RI[:LEVel] LOW /* Sets RI polarity to active low (Factory default)
The remote control interface must be used to change this setting. Once set, the polarity setting remains in
effect.
The way the BPS responds to a remote inhibit event can be programmed over the remote control interface
using the OUTP:RI:MODE command. See BPS Programming Manual for details on changing modes. The
mode set is retained at power off and recalled at power up so stays in effect till changed again over the
bus.
The following modes are supported.
MODE OPERATION
LATCHING A TTL low at the RI input latches the output in the
protection shutdown state. This state can only be cleared by
sending a OUTPut:PROTection:CLEar command over the
bus.
LIVE The output state follows the state of the RI input. A TTL low
or contact closure at the RI input turns the output off; a TTL
high or open contact turns the output on. This mode is
equivalent to using the Output On/Off button on the front
panel.
Default mode. Units are shipped in this mode.
OFF The instrument ignores the RI input.
Table 4-12: Remote Inhibit Mode Settings
NOTE: When using the Remote Inhibit input, it will be necessary to disconnect any RI connection to
the BPS master unit when turning on the BPS master unit. During initialization, the RI
connection must be OPEN or initialization will be halted with the message WARING FOR
AUXILIARY displayed on the LCD screen.
BPS Series 57
User Manual AMETEK Programmable Power
5. Front Panel Operation
5.1 Tour of the Front Panel
The BPS Series controllers have identical front panels although some of the keys found on the front panel
are only used by certain BPS models. Unused keys will be “don’t cares” in their functions. This chapter
provides information on operating the BPS front panel controls.
Before operating the AC source using the front panel, it helps to understand the operation of the front
panel controls. Specifically, the operation of the knob, keyboard and the menu layout are covered in the
next few paragraphs.
5.1.1 Front Panel Controls and Indicators
The front panel can be divided in a small number of functional areas:
Mains circuit breaker
Status Indicator lights
Shuttle knob
LCD display
FUNCTION keypad
DATA ENTRY keypad
5.1.2 System On/Off Circuit Breaker
The circuit breaker located on the bottom left side of the front panel disconnects the low voltage supply of
the BPS Source from the three phase Line input. This will remove power from the mains AC input
contactor and thus remove input power from the BPS Series power source. As such, the circuit breaker
acts as an indirect power on/off switch for the BPS Series unit. Note however than AC input power
remains applied to the primary side of the input transformer.
When the input current rating of the BPS Series AC power source is exceeded, the protectiv e fuses (F1
through F3 or F1 through F6 depending on model) will blow. In this case, power to the low voltage supply
may still remain through the front panel circuit breaker. In this case, the on/off circuit breaker should be
opened (power off) first followed by a complete disconnect of all ac input power through an installed main
circuit breaker.
Note that in multi-box BPS150 and BPS180 system configurations, each chassis has its own on/off circuit
breaker and set of line input fuses.
BPS Series 58
User Manual AMETEK Programmable Power
5.1.3 Status Indicator Lights
Four LED status indicators are located directly above the mains circuit breaker. These LED’s correspond
to the following conditions:
REMOTE The REMOTE LED indicates that the unit is in remote control mode.
If the IEEE-488 interface is used, this indicator will be lit whenever
the REM line (REMOTE ENABLE) line is asserted by the IEEE
controller. If the RS232, USB or LAN interface is used, the REMOTE
state can be enabled by the controller using the SYST:REM command.
Any time the REMOTE LED is lit, the front panel of the BPS Series
unit is disabled. There is no LOCAL button that allows the user to
regain control of the front panel. This prevents accidental change of
settings in ATE applications.
OVERLOAD The OVERLOAD LED indicates an output overload condition. This
condition can be controlled by setting the current limit value in the
PROGRAM menu. Removing the load using the OUTPUT ON/OFF
button will recover from an overload condition.
OVER TEMPERATURE The OVER TEMPERATURE LED indicates an overheating problem
inside the unit. This is an abnormal condition, which will cause the
unit to shut off. Check the air openings to make sure they are not
blocked.
HI RANGE The HI RANGE LED is on when the high voltage output range has
been selected.
BPS Series 59
User Manual AMETEK Programmable Power
5.1.4 The Shuttle Knob
Counter
Clock
wise
Clock
wise
INCRDECR
Figure 5-1: Shuttle Knob
The shuttle knob is located to the right of the LCD screen and is used to change setup parameters. Note
that it cannot be used to move the cursor position between menu fields. Use the UP and DOWN arrow
keys in the FUNCTION keypad for this.
The shuttle knob can operate in one of two distinct modes of operation:
MODE DESCRIPTION
IMMEDIATE mode Any time the ENTER key is pressed, the BPS Series returns to its
normal mode of operation. In this mode, changes made with the
shuttle knob or the data entry keypad will take immediate effect. The
IMMEDIATE mode is useful for slewing output values such as
voltage and frequency and observing the effect on the load.
SET mode When the SET key located in the FUNCTION keypad is pressed,
changes made with the shuttle to any output parameter will not take
effect until the ENTER key is pressed. In this mode, any changes
made to a setup menu will be blinking to indicate the pending change
condition. This mode allows changes to be made to all output
parameters and executing them all at once by pressing the ENTER
key.
BPS Series 60
User Manual AMETEK Programmable Power
5.1.5 FUNCTION Keypad
The function keypad provides access to all menus and measurement screens.
Note: Not all screen functions indicated in this section of this manual are available on the BPS model
power source. Consult factory for further information about any additional options.
The following keys are located in the FUNCTION keypad:
FUNCTION
MENUPROGWAVEMEAS
OUTPUT
ON/OFF
Figure 5-2: FUNCTION Keypad
KEY DESCRIPTION
MENU The top level menu is accessed by pressing the MENU key. Three
shortcut keys are used to provide direct access to the PROGRAM,
WAVEFORM, and MEASUREMENT screens as these are among the
most frequently used screens. Thus, instead of going through the main
menu to reach the PROGRAM, WAVEFORM, and
MEASUREMENT screens, they can be accessed directly by pressing
the PROG, WAVE, and MEAS keys respectively. A map of the Main
menus is provided on the next few pages. There are three top level
menus in the BPS Series.
PROG The PROG key is a shortcut to access the PROGRAM menu directly.
The PROGRAM menu is one of the most frequently used menus.
Thus, instead of going through the main menu to reach the
PROGRAM menu, it can be accessed directly by pressing the PROG
key.
WAVE The WAVE key is a shortcut to access the WAVEFORM screen
directly. The WAVEFORM screen is used to select a user defined
arbitrary waveform.
PHASE
SET
+/-
MEAS The MEAS key is a shortcut to access the MEASUREMENT screen
directly. The MEASUREMENT screen is one of the most frequently
used screens. Thus, instead of going through the main menu to reach
the MEASUREMENT screen, it can be accessed directly by pressing
the MEAS key.
BPS Series 61
User Manual AMETEK Programmable Power
OUTPUT ON/OFF The OUTPUT ON/OFF key toggles the output relay on or off. The
state of the output relay is reflected by the green LED located directly
to the left of the OUTPUT ON/OFF key. If the green LED is lit, the
output relay is enabled (closed) and the programmed output voltage is
present at the output terminals. If the green LED is off, the output
relay is open and both the HIGH and LO terminal of the output
terminal block are disconnected from the power source. In t his mode,
the output is floating. The ON/OFF button provides a convenient way
to disconnect the load without having to remove any wires.
PHASE The PHASE key is used to select the phase on a BPS power source.
Pressing the PHASE key will toggle phase A, B, C or ABC. Some
screens may not support the ABC or show all phase information in
which case this mode is skipped.
SET The SET key is used to select the mode of operation of the shuttle.
Refer to section 5.1.1 for details on its operation and the use of the
SET key.
+/- The +/- key can be used to toggle the sign for those parameters for
which it is relevant. This is typically the output voltage when in DC
mode of operation. For fields that have only two possible values such
as the voltage range field, the +/- key can be used to toggle between
these two values.
BPS Series 62
User Manual AMETEK Programmable Power
5.1.6 DECIMAL KEYPAD
The decimal keypad may be used to enter any numeric parameter required in any of the menu fields.
Several fields accept input from either the keypad or the knob. Data entered from the keypad is normally
accepted once the ENTER key is pressed unless the front panel mode is in the SET mode. The following
keys are available on the decimal keypad:
ENTRY
7
89
456
123
.0
Figure 5-3: Entering Values from the Decimal Keypad
CURSOR UP The UP key moves the cursor position upwards one position to the
previous available cursor position. If the present cursor position is at
the top of the right hand column, the cursor is moved to the bottom
position of the left hand column. If the present cursor is at the top of
the left hand column, the cursor is moved to the bottom of the right
hand column. Figure 5-4 depicts the cursor movement through a two
column menu.
E
N
T
E
R
Figure 5-4: Cursor UP Key Movement
CURSOR DOWN The DOWN key moves the cursor position downwards one position to
the next available cursor position. If the present cursor position is at
the bottom of the left hand column, the cursor is moved to the top
position of the right hand column. If the present cursor is at the bottom
of the right hand column, the cursor is moved to the top of the left
hand column. Figure 5-5 depicts the cursor movement through a twocolumn menu.
BPS Series 63
User Manual AMETEK Programmable Power
Figure 5-5: Cursor DOWN key Movement
The decimal keypad can be used at any time in lieu of the shuttle knob to change output parameters. Direct
data entry is often faster to effect large changes in values than using the shuttle knob . Note that pressing
the ENTER key while in SET mode of operation will cause the AC source to revert back to IMMEDIATE
mode. Thus, to change all parameters in SET mode, enter a value for each field and then proceed to the
next field without pressing the ENTER key.
0 through 9. The numeric keys provide all decimal number for entry of parameters.
DECIMAL POINT The decimal point key is used to enter fractional parts of values for
fields that have a resolution less than 1. The amount of resolution for
each menu field is normally visible on the LCD. If more digits are
entered after the decimal point than can be accepted by a field, the
value is automatically rounded to the available resolution when the
ENTER key is pressed.
BACKSPACE The BACKSPACE () key can be used to erase one digit at a time if
you make a data entry error.
5.1.7 LCD Display
The LCD display of the BPS Series power source provides information on instrument settings and also
guides the user through the various menus. To ease reading of the displayed information, most screens are
widely spaced. A sample of the main menu 1 screen that appears when the BPS Series source is powered
up is shown in Figure 5-6. Due to the amount of space available on each screen, some menus have been
split into parts. The MORE selection located at the bottom right hand side provides access to menu
choices at the same level that did not fit on a single screen. Thus, to access MENU 2, the cursor should be
placed on the ‘MORE’ selection followed by pressing the ‘ENTER’ key. Alternatively, the MENU key
may be pressed to move to the MENU 2 screen.
The present cursor position is always shown with a inverse bar. The cursor is located on the ‘MORE’
selection in Figure 5-6. Pressing ENTER would cause MENU 2 to be displayed.
The cursor position can be moved by using the UP and DOWN keys located in the DECIMAL keypad.
Figure 5-6: Main Menu 1 Screen
BPS Series 64
User Manual AMETEK Programmable Power
5.2 Menu Structure
The next few pages show a map of the available menus in the BPS Series. There are three main level
(level 1) menus from which all other menus can be reached. Frequently used (level 2) menus have a short
cut key that provides direct access. Examples of such menus are Program, Measurements, and Waveform.
In any case, there are never more than three levels of menus although some menus may be spread across
more than one screen.
Note: Not all features and options shown are available on the BTS Series product. Please consult the
date sheet for further information and the availability of upgrades.
5.2.1 MAIN Menus
Figure 5-7: Menu 1 through 3
The top-level menu is split in three parts, MENU 1 through MENU 3 to allow spacing between menu
entries. MENU 2 and 3 can be reached from MENU 1 by selecting the MORE entry or by pressing the
MENU key repeatedly, which will toggle from MENU 1 to 2 to 3 and back to 1. The division of menu
choices between the two screens is graphically illustrated in 5.2.2 by the boxes in level 1. Each box
represents one screen. Subsequent screens can be reached using the MORE entry.
BPS Series 65
User Manual AMETEK Programmable Power
The following top-level menu choices can be accessed from the MENU key:
Entry Description
MENU 1
PROGRAM The PROGRAM menu allows output parameters the be changed.
MEASUREMENTS The MEASUREMENTS screens are not menus in that no user entries
are required.
TRANSIENTS The TRANSIENTS menu allows output transients to be programmed.
WAVEFORMS The WAVEFORMS menu allows different waveforms to be selected
from the waveform library. Not available on all models.
MORE The MORE selection causes the second part of the MENU screen to
be displayed. (MENU 2)
MENU 2
ADVANCED MEAS. The ADVANCED MEAS. screens are for display only. No user
entries are required. Not available on all models.
APPLICATIONS The APPLICATIONS menu provides access to the optional firmware
application programs that may be installed in the BPS Series AC
source. Not all applications are available on this model power source.
SETUP REGISTERS The SETUP REGISTERS menu allows complete instrument settings
and transient list programs to be saved to nonvolatile memory.
MORE The MORE selection causes the third part of the MENU screen to be
displayed. (MENU 3)
MENU 3
UTILITY The UTILITY menu provides access to less commonly used setup
screens such as those for the GPIB and RS232C (also applies to USB
and LAN) interface settings, initial startup values, etc.
MEASUREMENT CAL The MEASUREMENT CAL menu allows for calibration of the AC
source measurement system.
OUTPUT CAL The OUTPUT CAL menu allows for calibration of the AC source
output.
Following the Menu overview pages is a detailed description of each menu and sub menu.
BPS Series 66
User Manual AMETEK Programmable Power
5.2.2 Overview of Menu 1
level 1
MENU 1 PROGRAM
MEASUREMENT
S
TRANSIENTS
WAVEFORMS
MORE
level 2 level 3
PROGRAM1
VOLTAGE
FREQ
VOLT RANGE
CURR LIMIT
MORE
PROGRAM2
PHASE
CLOCK MODE
VOLT MODE
DC OFFSET
START ø
MEASUREMENTS1
VOLTAGE
CURRENT
FREQ
POWER
MORE
MEASUREMENTS 2
VA POWER
PEAK CURR
POWER FACT
CREST FACT
PEAK CURR RESET
MEASUREMENTS 3
VOLT THD
CURR THD
INST PK CURR
PHASE
HARMONICS/TRACE
ANALYSIS
FUNCTION
VIEW
DATA MODE
SCALE
TRIG MODE
TRIG SOURCE
TRIG PHASE
TRIG DELAY
START
VOLT SURGE/SAG START ø
VOLT SWEEP/STEP START ø GO TO VOLT
FREQ SWEEP/STEP DURATION END VOLT DUR SCALE
VOLT/FREQ SWEEP/STEP DURATION END FREQ DUR SCALE DURATION
START/VIEW SEQUENCE START END VOLT END DELAY DURATION END VOLT
PREVIOUS SCREEN PAUSE END FREQ FUNCTION END DELAY END DELAY
REPEAT #0 END DELAY REPEAT FUNCTION FUNCTION
CLEAR SEQ FUNCTION EVENT# REPEAT REPEAT
APPLICATIONS SETUP 1
MIL-STD 704 STEADY STATE
OMNI OPTION MODE TRANSIENTS
RTCA-DO160D NORMAL STATE PREVIOUS SCREEN ABNORMAL
IEC 1000-4-11 IEC 1000-4-11 TESTS EMERGENCY EMERGENCY
APPLICATIONS SETUP 2 DIPS AND INTER. ABNORMAL ALL MIL704 TESTS
IEC 1000-4-13 IEC 1000-4-13 TESTS VOLT VARIATIONS PREVIOUS SCREEN PREVIOUS SCREEN
WH METER STATE PREVIOUS SCREEN SNK only WATT-HOUR METER
REGENERATE RUN REGEN CONTROL START
CLASS STATE ETIME
SAVE REGISTER # GROUP UNDER VOLT WATT HR
VIEW/EDIT REG # DWELL OVER VOLT POWER
RECALL REGISTER # LEVEL dFREQ PK CURR
PREVIOUS SCREEN FRANGE DELAY
STEP
IHFREQ
RESONANT
UTILITY 1
GPIB/RS232 SETUP GPIB ADDRESS
VOLT/CURR CONTROL VOLT ALC RS232 BAUDRATE
PREVIOUS SCREEN OL MODE RS232 DATA
INITIAL SETUP VOLTAGE TRIP DELAY RS232 PARITY
LIMIT SETUP VOLTAGE CUR LIMIT VOLT SENSE RS232 STOPBITS
MORE CUR LIMIT PREV. SCREEN NO. OUTPUT PREVIOUS SCREEN
UTILITY 2
CONFIGURATION CONFIG SETUP 1 FREQ HI PHASE
LANETWORK SETUP NO. OUTPUT PHASE C MORE HH:MM:SS
ELAPSED TIME ADVANCE PREVIOUS SCREEN VOLT RANGE TEMPERATURE
VIEWING ANGLE DO160 VOLT MODE
PREVIOUS SCREEN MIL704 OL MODE
CONFIG SETUP 2 OUTPUT RELAY
IEC 4-11 MORE
IEC 4-13 VOLT SENSE
CLOCK/LOCK WAVE GROUP
WH METER CLOCK MODE
RESISTIVE CONFIG SETUP 3 NO. OUTPUT
INDUCTIVE MS704 VOLT ALC
SET MINIMUM ABD PREVIOUS SCREEN
LF SYSTEM CONFIG SETUP 4 MB MANUAL OPTn LAN SNK
VOLT FS
CURR FS
PREVIOUS SCREEN
VOLT FS
VOLT ZERO
FREQ LO FREQ PREV. SCREEN
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User Manual AMETEK Programmable Power
PHASE OFST
IHARM FS
IMP. REAL FS
IMP. REACT FS
IMP. REAL MIN
IMP. REACT MIN
PREVIOUS SCREEN
5.2.4 PROGRAM Menu
The PROGRAM menu is shown in Figure 5-8. It can be reached in one of two ways:
1. by selecting the PROGRAM entry in the MENU screen and pressing the ENTER key
2. by pressing the PROG key in the FUNCTION keypad
The PROGRAM menu is used to change output parameters. The most commonly used parameters are all
located in PROGRAM 1. The PREVIOUS SCREEN entry, when selected, will return the user to the most
recently selected menu. This is normally the MENU screen unless the PROGRAM menu was selected
using the PROG key on the FUNCTION keypad. Less frequently used parameters are located in
PROGRAM 2, which can be reached from the PROGRAM 1 screen using the MORE selection, or by
pressing the PROGRAM key twice.
Figure 5-8: PROGRAM Menu
The following choices are available in the PROGRAM menus:
Entry Description
PROGRAM 1
VOLTAGE Programs the output voltage in Vrms while in AC mode or absolute
voltage when in DC mode. In DC mode, negative values can be
entered.
FREQ Programs the output frequency when in AC mode. If the unit is in DC
mode, the value for FREQ will be set to DC and cannot be changed
until AC mode is selected. When in AC mode, the frequency can be
changed from 16 Hz to 500 Hz. Values entered that fall outside this
range will generate a -200 RANGE ERROR and will not be accepted.
VOLT RANGE Selects 150V, 300V or optional 400V range in AC mode and 200V or
400V range in DC mode. The actual range values may be different
depending on the configuration. The value of this field can only be
changed with the shuttle or the +/- key.
CURR LIMIT Sets the cu rrent limit value for the current detection system. When the
load current value exceeds the set current limit, a fault condition is
generated. The actual response of the AC Source to a current limit
fault is determined by the protection mode selected in the
PHASE Selects the phase angle between the external clock and the output of
the AC source. If the clock source is internal, this parameter has no
effect.
CLOCK MODE Selects internal or external clock source. The BPS Series controller
uses an open-air crystal time base with an accuracy of 100 ppm. To
improve output frequency stability and accuracy, an external clock
generator may be used.
VOLT MODE The BPS Series offers three output modes, AC, DC and AC+DC. The
VOLT MODE field can be used to toggle between these three output
modes. Both the Knob and the +/- key may be used to toggle through
these three selections. In DC mode, no frequency selection is possible
and all maximum current and power ratings are divided by two.
DC OFFSET When the AC+DC mode is selected, the VOLTAGE field in the
PROGRAM 1 screen is used to set the AC portion of the output
voltage. The DC OFFSET field in the PROGRAM 2 screen can be
used to set the DC offset level. Either the knob or the decimal keypad
may be used to set the DC offset level.
START ø Selects the start phase angle for output changes made to either voltage
or frequency. This allows changing the output at a specific phase
angle. The output on key also uses this phase angle setting to program
the output voltage up to the set level after the output relay is closed.
The default value for this field is RANDOM.
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User Manual AMETEK Programmable Power
5.2.5 MEASUREMENTS Screens
The BPS Series uses a DSP based data acquisition system to provide extensive information regarding the
output of the Source. This data acquisition system digitizes the voltage and current waveforms and
calculates several parameters from this digitized data. The result of these calculations is displayed in a
series of measurement data screens. The actual digitized wa vef orms can also be displayed by selecting the
Harmonics/Trace Analysis screen. A total of four measurement screens are used to display all this
information.
Figure 5-9: MEASUREMENTS Screen, Single Phase and Three Phase Modes
The first three Measurement screens available on the BPS Series are not menus in that no changes can be
made anywhere. Instead, these three screens provide load parameter readouts. The fourth measurement
screen provides access to the advanced measurements and does offer several user accessible fields. The
measurement screens can be reached by successively pressing the MEAS key, which will toggle to all four
available screens.
In three-phase mode, measurements are available for each phase individually. To select the desired phase,
use the PHASE key to toggle through phase A, B, C, or ABC. The ABC mode displays the data for all
three phases simultaneously.
The following parameters are available in the first three measurement screens:
Entry Description
MEASUREMENT 1
VOLTAGE When in AC or AC+DC mode, this value is th e true rms output
voltage measured at the voltage sense lines. In DC only mode, the
voltage is the DC voltage including polarity.
CURRENT When in AC or AC+DC mode, this value is the true rms output
current drawn by the load. In DC only mode, the current is the DC
current including polarity
FREQ When in AC or AC+DC mode, the output frequency is measured at
the sense lines. When in DC only mode, this value always reads “DC”.
POWER In both AC and DC mode, this value is the real rms. power consumed
by the load.
MEASUREMENT 2
VA POWER In AC or AC+DC mode, this value is the apparent rms. power
consumed by the load. In DC mode, this value is always the same as
the POWER readout.
PEAK CURR This readout reflects the peak current value detected at the output. To
measure inrush current for a unit under test, open the output relay and
reset the peak current value using the PEAK CURR RESET entry.
Then program the output voltage and frequency and turn on the output
relay. The peak current measurement will continuously track the
maximum current value detected until reset.
POWER FACTOR This readout shows the power factor of the load.
CREST FACTOR This readout displays the ratio between peak current and rms current.
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User Manual AMETEK Programmable Power
MEASUREMENT 3
VOLT THD This readout displays the total voltage distortion for the selected
phase. The distortion calculation is based on the H2 through H50 with
the fundamental voltage (H1) in the denominator. Note that other
common definitions of THD use the RMS value of the voltage as the
denominator. This may result in different readings between
instruments depending on the implementation chosen. The mode used
by the power source is selectable over the bus.
CURR THD This readout displays the total current d istortion for the selected phase.
The distortion calculation is based on the H2 through H50 with the
fundamental current (H1) in the denominator. Note that other comm on
definitions of THD use the RMS value of the current as the
denominator. This may result in different readings between
instruments depending on the implementation chosen. The mode used
by the power source is selectable over the bus.
INST PK CURR This readout reflects the instantaneous peak current value detected at
the output. This value is updated continuously and does not require a
reset operation like the PEAK CURR readout. The inst antaneous peak
current does not use a track and hold mechanism like the PEAK
CURR measurement in the MEASUREMENT 2 screen. Instead, it
tracks the peak current on a cycle-by-cycle basis. The INST PK
CURR typically tracks the rms current and the crest factor.
Update Program Functions from Measurement Screen
The Shuttle can be used to update program parameters such as voltage, frequency or current from the
measurement screen. This can be achieved with the following sequence:
1. Select the program 1 screen using the PROG key.
2. Use the up and down key to select the desired function to update. (Selects parameter that will be
changed by the shuttle once in the MEAS1 screen)
3. Select the measurement 1 screen by pressing the MEAS key.
4. The pointer symbol () points to the programmed parameter (V, F or CL) that will be affected by
turning the shuttle.
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5.2.6 TRANSIENTS Menu
Figure 5-10: TRANSIENTS Menu
The transient menu provides access to the transient list data. Available list length is:100 data points. This
is represented by 100 transient step numbers from 0 through 99.
From the Transient menu, the desired transient step type can be selected. Based on the user’s choice, the
relevant transient type sub menu will be shown. The START/EDIT SEQUENCE sub menu allows the user
to review and change any transient step or execute the transient list. When executing a transient list,
transient steps are executed in a ascending numerical order. Steps that are not defined are skipped.
The following entries can be found in the TRANSIENTS menu:
Entry Description
VOLT SURGE/SAG Voltage surges and sags are temporary changes in amplitude. The
output voltage will change from its present value to a user specified
value for a specified duration. (Sag if the value is lower, surge if the
value is higher.) After this period has expired, the output voltage
returns to a user specified end value. This value may or may not be the
same as the value present prior to the start of the sag or surge.
VOLT SWEEP/STEP Voltage sweeps cause the output voltage to change from the present
value to a user specified end value at a specified rate of change. A
voltage step on the other hand is an instantaneous change in output
voltage. The new value will be held for the duration period specified
by the user. The final output voltage value of a sweep and a step
transient step should be different than the value at the start of the
transient step or no change in output value will occur.
FREQ SWEEP/STEP This transient type is similar to a voltage sweep/step except it affects
the frequency. Refer to the previous paragraph.
VOLT/FREQ SWEEP/STEP This transient type combines the previous two types into a single step.
The effect is that of changing the output voltage and frequency
simultaneously.
Note: While this transient is programmed as a single transient step,
two list entries are required to store this information. As such, every
VOLT/FREQ SWEEP/STEP used will consume two list entries at a
time.
START/VIEW SEQUENCE This entry allows the user to switch to the transient execution menu.
This menu provides a list of all available transient list steps and their
sequence numbers. From this menu, transient list execution can be
started.
The same menu can be used to view or edit any available transient list
step or erase a step using the backspace key.
BPS Series 73
User Manual AMETEK Programmable Power
5.2.6.1 VOLT SURGE/SAG sub menu
Figure 5-11: VOLTAGE SURGE/SAG SETUP Screen
The Voltage surge and sag screen shown in Figure 5-11 can be reached from the transient screen as
follows:
1. Scroll to the VOLT SURGE/SAG entry using the up and down cursor keys.
2. Press the ENTER key to bring up the VOLT SURGE/SAG screen.
The VOLT SURGE/SAG screen has several data fields. All data fields that are blank to the right of the
equal sign must be filled or an error message will occur when trying to leave this screen. The EVENT # is
the last data field to be filled. Entering the event data field will cause the display to return to the
TRANSIENT screen where a new selection can be made.
The VOLT/SURGE/SAG screen has the following fields:
START ø This field will show the start phase angle of the voltage transient in
degrees. Only one start phase angle per transient sequence is allowed.
The start phase angle must be in the first transient event in the list. The
start phase angle is not valid for DC transients. If no start phase angle
is required, this field can be set to RANDOM by pressing the
BACKSPACE (<-) key on the decimal keypad.
GO TO VOLT This field will set the voltage level during the transient duration in
volts
DUR SCALE Duration scale default is time in seconds. Use the Shuttle knob to
select CYCLES if desired. Note that durations expressed in cycles
may cause rounding errors if the period of the selected frequency
setting is not an integer number of mss. Thus, for 50 Hz applications,
no rounding errors occur but for 60 Hz, the 16.66¯ ms period will
cause a rounding error when converted. The Duration scale selection
affects both the DURATION and END DELAY parameters.
DURATION Duration is the time the output voltage level will dw ell at the GO TO
VOLT level. The DUR SCALE defines the time scale of this
parameter in CYCLES or SECONDS
END VOLT This is the output voltage level at the end of the transient EVENT and
after a time specified by the DURATION
END DELAY This is the time delay the voltage lev e l will stay at the END VOLT
level before it proceeds with the next transient event or completes the
transient.
FUNCTION This field can be used to select the wave shape to be used during this
step of the transient sequence. Each step can use a different wave
shape from the available library of 50 user-defined waveforms or the
three standard waveforms. The output wave shape changes upon entry
into each step and remains in effect for the duration of the step. The
default wave shape is always the SINE (sine wave).
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User Manual AMETEK Programmable Power
REPEAT This is the number of times the SURGE/SAG transient event will
repeat before it will proceed to the next event or exit the transient
program. Note that the number of times the transient event is
generated is equal to the REPEAT + 1. Leave this value at zero if only
one execution of this event in the list is required.
EVENT # This must be the last item in the transient edit screen. All data fields
must be entered before inserting the EVENT #. The EV ENT # takes a
value from 1 to 99. The EVENT # defines the order of execution of
the transient events in a multiple event transient. It is a good practice
to enter spaced EVENT #’s to allow insertion of an EVENT later if
needed. (For example, space them by 5.) Entry of a sequence EVENT
# number will cause the display to return to the TRANSIENT screen.
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User Manual AMETEK Programmable Power
5.2.6.2 VOLTAGE SWEEP/STEP sub menu
Figure 5-12: VOLTAGE SWEEP/STEP SETUP Screen
The Voltage sweep and step screen shown in Figure 5-12 can be reached from the transient screen as
follows:
1. Scroll to the VOLT SWEEP/STEP entry using the up and down keys.
2. Press the ENTER key to bring up the VOLTAGE SWEEP/STEP screen.
The VOLTAGE SWEEP/STEP screen has several data fields. All data fields that are blank to the right of
the equal sign must be filled or an error message will occur when trying to leave this screen. The EVENT
# is the last data field to be filled. Entering the event data field will cause the display to return to the
TRANSIENT screen where a new selection can be made.
The VOLTAGE SWEEP/STEP screen has the following fields:
START This field will show the start phase angle of the voltage transient in
degrees. Only one start phase angle per transient sequence is allowed.
The start phase angle must be in the first transient event in the list. The
start phase angle is not valid for DC transient.
END VOLT This is the output voltage level at the end of the transient event in
volts.
DUR SCALE Duration scale default is time in seconds. Use the Shuttle knob to
select CYCLES if desired. Note that durations expressed in cycles
may cause rounding errors if the period of the selected frequency
setting is not an integer number of mss. Thus, for 50 Hz applications,
no rounding errors occur but for 60 Hz, the 16.66¯ ms period will
cause a rounding error when converted. The Duration scale selection
affects both the DURATION and END DELAY parameters.
DURATION Duration is the time it will take for the output voltage to reach the
END VOLT level. As such, “Duration” will define the slew rate of the
output voltage for the event. A duration of 0 seconds will cause the
output voltage to reach the end voltage immediately. The DUR
SCALE defines the time parameter CYCLES or SECONDS
END DELAY This is the time delay the voltage level will stay at END VOLT before
it proceeds with the next transient event or completes the transient.
FUNCTION This field can be used to select the wave shape to be used during this
step of the transient sequence. Each step can use a different wave
shape from the available library of 50 user-defined waveforms or the
three standard waveforms. The output wave shape changes upon entry
into each step and remains in effect for the duration of the step. The
default wave shape is always the SINE (sine wave).
REPEAT This is the number of times the VOLTAGE SWEEP/STEP transient
event will repeat before it will proceed to the next event or exit the
transient program. Note that the number of times the transient event is
generated is equal to the REPEAT + 1. Leave this value at zero if only
one execution of this event in the list is required.
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EVENT # This must be the last item in the transient edit screen. All data fields
must be entered before inserting the EVENT #. The EV ENT # takes a
value from 1 to 99. The EVENT # defines the order of execution of
the transient events in a multiple event transient. It is a good practice
to enter spaced EVENT #’s to allow insertion of an EVENT later if
needed. (For example, space them by 5.) Entry of a sequence EVENT
# number will cause the display to return to the TRANSIENT screen.
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User Manual AMETEK Programmable Power
5.2.6.3 FREQUENCY SWEEP/STEP sub menu
Figure 5-13: FREQUENCY SWEEP/STEP SETUP Screen
The Voltage sweep and step screen shown in Figure 5-13 can be reached from the transient screen as
follows:
1. Scroll to the FREQ SWEEP/STEP entry using the up and down cursor keys.
2. Press the ENTER key to bring up the FREQ SWEEP/STEP screen.
The FREQ SWEEP/STEP screen has several data fields. All data fields that are blank to the right of the
equal sign must be filled or an error message will occur when trying to leave this screen. The EVENT # is
the last data field to be filled. Entering the event data field will cause the display to return to the
TRANSIENT screen where a new selection can be made.
The FREQ SWEEP/STEP screen has the following fields:
DURATION Duration is amount of the time the output frequency will take to reach
the END FREQ level. Duration will define the slew rate of the output
frequency for the event. A duration of 0 seconds will cause the output
frequency to reach the end frequency immediately.
END FREQ This is the output frequency at the end of the transient event in Hz.
END DELAY This is the time delay the frequency will stay at END FREQ before it
proceeds with the next transient event or completes the transient.
FUNCTION This field can be used to select the wave shape to be used during this
step of the transient sequence. Each step can use a different wave
shape from the available library of 50 user-defined waveforms or the
three standard waveforms. The output wave shape changes upon entry
into each step and remains in effect for the duration of the step. The
default wave shape is always the SINE (sine wave).
REPEAT This is the number of times the FREQUENCY SWEEP/STEP
transient will repeat before it will proceed to the next event or exit the
transient. The number of times the transient event is generated is equal
to the REPEAT + 1. Leave this value at zero if only one execution of
this event in the list is required.
EVENT # This must be the last item in the transient edit screen. All data fields
must be entered before inserting the EVENT #. The EVENT # takes
value from 1 to 99. The EVENT # defines the order of execution of
the transient events in a multiple event transient. It is a good practice
to enter spaced EVENT #’s to allow insertion of an EVENT later if
needed. (For example, space them by 5.) Entry of a sequence EVENT
# number will cause the display to return to the TRANSIENT screen.
The Volt/freq sweep/step screen shown in Figure 5-14 can be reached from the transient screen as follows:
1. Scroll to the VOLT/FREQ SWEEP/STEP entry using the up and down cursor keys.
2. Press the ENTER key to bring up the VOLT/FREQ SWEEP/STEP screen.
The VOLT/FREQ SWEEP/STEP screen has several data fields. All data fields that are blank to the right
of the equal sign must be filled or an error message will occur when trying to leave this screen. The
EVENT # is the last data field to be filled. Entering the event data field will cause the display to return to
the TRANSIENT screen where a new selection can be made.
The VOLT/FREQ SWEEP/STEP screen has the following fields:
DURATION Duration is the amount of time the output voltage and frequency will
take to reach the END FREQ and END VOLT levels. Duration will
define the slew rate of the output voltage and frequency for the event.
A duration of 0 seconds will cause the output voltage and frequency to
reach their end value immediately.
END FREQ This is the output frequency at the end of the transient event in Hz.
END VOLT This is the output voltage at the end of the transient event in volts.
END DELAY This is the time delay the output frequency and voltage will stay at
END FREQ and END VOLT before proceeding with the next
transient event or completing the transient.
FUNCTION This field can be used to select the wave shape to be used during this
step of the transient sequence. Each step can use a different wave
shape from the available library of 50 user-defined waveforms or the
three standard waveforms. The output wave shape changes upon entry
into each step and remains in effect for the duration of the step. The
default wave shape is always the SINE (sine wave).
REPEAT This is the number of times the VOLTAGE/FREQUENCY
SWEEP/STEP transient will repeat before it will proceed to the next
event or exit the transient. The number of times the transient event is
generated is equal to the REPEAT + 1. Leave this value at zero if only
one execution of this event in the list is required.
EVENT # This must be the last item in the transient edit screen. All data fields
must be entered before inserting the EVENT #. The EVENT # takes
value from 1 to 99. The EVENT # defines the order of execution of
the transient events in a multiple event transient. It is a good practice
to enter spaced EVENT #’s to allow insertion of an EVENT later if
needed. (For example, space them by 5.) Entry of a sequence
EVENT # number will cause the display to return to the TRANSIENT
screen.
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User Manual AMETEK Programmable Power
5.2.6.5 START/VIEW TRANSIENT SEQUENCE sub menu
Figure 5-15:START/VIEW TRANSIENT SEQUENCE Screen
The START/VIEW TRANSIENT SEQUENCE screen is used to control transient execution. It also
provides an overview of available transient list events. This list appears in the order they were assigned
event numbers. Editing an existing event can be accomplished from this screen by positioning the cursor
on the event to be edited and pressing the ENTER key. This method can also be used to review the
parameters of a previously entered event.
The START/VIEW TRANSIENT SEQUENCE screen has the following fields:
START / ABORT The START field is used to start a transient execution. When the
cursor is positioned on the START field and the ENTER key is
pressed, transient execution starts. The output relay must be closed or
an error message will appear and the transient will not start.
Once a transient is in progress, this field changes to ABORT and can
be used to abort a transient in progress. If the transient completes
execution, the field reverts back to START.
PAUSE / RESUME The PAUSE field may be used to suspend execution of a transient list
REPEAT # This field determines the number of times a transient list is repeated.
CLEAR SEQ Moving the cursor to this field and pressing the ENTER key will
5.2.7 SETUP REGISTERS Menu
The SETUP REGISTERS menu allows the user to store and recall complete instrument setups, including
transient program lists. A total of 16 non-volatile setup registers is available, numbered sequentially from
0 through 15.
in progress. If the cursor is on the PAUSE field and the ENTER key is
pressed, the transient is suspended and this field ch anges to RESUME.
Pressing the ENTER key again will cause the transient list to resume
execution from the point where it was suspended.
The default value is zero, which means the programmed list runs only
once. The range for this field is from 0 through 99999. This repeat
function should not be confused with the REPEAT function available
for individual events. The event specific repeat value will cause only
that event to be repeated, not the entire list.
cause the entire programmed transient list to be erased. Be careful not
to press ENTER accidentally while on this field as you will loose the
programmed transient list. Note that a list may be stored as part of the
front panel setup in the nonvolatile memory registers.
Figure 5-16: SETUP REGISTERS Menu
The following entries can be found in the SETUP REGISTERS menu:
Entry Description
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User Manual AMETEK Programmable Power
SAVE REGISTER Save present instrument setup to a register number selected by the
user. The numeric data entry keypad should be used to enter a number
between 0 and 15. Once the ENTER key is pressed, all settings are
saved. A message will appear at the bottom of the screen to confirm
the save operation.
RECALL REGISTER Recall instrument setup from a register number selected by the user.
The numeric data entry keypad should be used to enter a number
between 0 and 15. Once the ENTER key is pressed, all settings are
recalled. A message will appear at the bottom of the screen to confirm
the recall operation.
VIEW/EDIT REGISTER The View/Edit entry can be used to display the contents of a setup
register before it is recalled. After the user enters a register number to
view or edit and presses the ENTER key, the PROGRAM screen will
appear. All parameters that will be changed by recalling the register
will be blinking. If ENTER is pressed again, the register will be
recalled and the new values take effect. To edit the register content,
change all parameters that need to be changed. Pressing ENTER will
save the new values and make them active.
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5.2.8 UTILITY Menus
Figure 5-17: UTILITY Menus
The UTILITY menus provide access to less frequently used setup items. There is no connection between
the various entries in the UTILITY menu other than there is no other logical place to put them. The
following entries can be found in the UTILITY menu:
Entry Description
UTILITY 1
GPIB/RS232 SETUP This entry provides access to the setup parameters for either the IEEE-
488, RS232, USB or LAN interface. All parameters are saved in non-
volatile memory so there is rarely a need to change these values.
VOLT/CURR CONTROL The voltage and current control menu can be used to select the current
limit method, the voltage sense source.
The standard available voltage range pairs are 150 Vac and 300 Vac in
AC mode or 200 Vdc and 400 Vdc in DC mode.
The two current limit choices are Constant Voltage and Constant
Current. Constant Voltage mode will maintain the set voltage at the
output until the load current exceeds the current limit setting at which
time the voltage will be dropped to zero. This effectively shuts off the
AC source output in case of an overload condition. This mode has
user programmable trip delay, which is located in the same menu.
Constant Current mode will maintain the load current at the maximum
level set by the current limit value, even if the maximum power level
is exceeded. This is done by reducing the voltage as needed. As such,
the voltage will be reduced from the set level down to zero depending
on the load requirement. This mode is useful for starting up motor or
capacitor loads that may require a high inrush current. This mode also
has a user programmable trip delay.
Voltage sensing for regulation and measurement can be selected for
internal or external. External voltage sensing can compensate for
voltage drops caused by load cable impedance. To achieve the best
output regulation select external sense and connect the voltage sense
wires at the load.
INITIAL SETUP The initial setup menu can be used to determine the AC source
settings at power up. CAUTION: The initial setup can be used to
power up the AC source with the output on and a high voltage present
at the output. For normal situations, this is not recommended due to
the potential danger to operators. It is recommended that the initial
voltage be set low and/or the output relay be programmed to OFF for
most situations.
LIMIT SETUP The Limit menu shows the frequency, voltage and current limit
capabilities of the AC source. Any attempt to program the output
beyond these limits will result in a “-222 Data Out of Range error”.
Note that these limits are hardware determined and cannot be changed
by the user. They are shown for reference only.
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User Manual AMETEK Programmable Power
UTILITY 2
CONFIGURATION The Configuration menu shows the installed options. This screen is for
reference only and typically, no fields can be changed by the user.
LANETWORK SETUP Displays or sets LAN interface settings. If the LAN option is present,
this screen may be used to view or change LAN parameters. The
MAC address is fixed and cannot be changed. IP and Gateway
addresses are normally assigned by the network DCHP server.
Changes to the other fields can be made by pressing the SET button
first. The indicator in the top right hand of the screen will change from
“NC” to “SET”. Note that any setting changes made won’t take effect
till after the unit has been powered down and back up.
To set the LAN interface to AUTO IP mode, set the IP and Gateway
address to all zeros. This will cause the IP to be requested from the
network the next time power is cycled. To manually set the IP and
Gateway address, ente r the address from the keypad.
The Port address is normally set to 5025. The number of host bits is a
function of the network address range.
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User Manual AMETEK Programmable Power
ELAPSED TIME Th e elapsed time screen, when selected from the UTILITY menu, will
appear for about 3 seconds. The elapsed time shown is the cumulative
amount of time the power source has been on from its initial build.
This value is read only and cannot be changed by the user.
The same screen also displays the internal AC source ambient
temperature in degrees C.
VIEWING ANGLE The viewing angle can be used to change the contrast ratio of the LCD
display. The range of the viewing angle parameter is from -10 to +10.
Setting the right viewing angle is matter of personal taste. Set this
parameter to a value that is most comfortable for the user. To save a
new viewing angle setting, change the number to the desired value
using the knob or the keypad and press the ENTER key. The new
value will blink. To save it permanently, press the SET key.
BPS Series 84
User Manual AMETEK Programmable Power
5.2.8.1 GPIB/RS232 (incl. USB/LAN) SETUP menu
Figure 5-18: GPIB/RS232 SETUP Menu
The GPIB/RS232 SETUP menu may be used to change the interface parameter settings for both the IEEE488 interface and the RS232, USB or LAN interface. The number of interfaces available will depend on
the specific model and options as well as the time of manufacture. Older BPS models do not offer USB or
LAN interfaces. Newer models can be equipped with as many as 4 different interfaces although only one
can be used at the same time.
Refer to the BPS Series Programming Manual P/N 7003-961 distributed in Adobe PDF format on the
same CD ROM as this user manual for more details on using the RS232, USB or LAN interface.
The following parameters can be set from this menu:
GPIB ADDRESS Sets the IEEE-488 address used by the AC source. The address value
can be set from 0 through 31. Address 0 is often reserved for the
IEEE-488 controller. The factory setting is address 1. Once changed,
the IEEE-488 address is retained in nonvolatile memory.
RS232 BAUDRATE This field can be used to set th e RS232 baud rate to either 9600,
19,200, 38,400, 57600 or 115,200 baud. The baud rate set on the AC
source must match the one programmed for the communications port
of the controller. Baud rates higher than 115200 are provided for the
USB and LAN interface modes only. The same setting is used for
USB and LAN modes. For use with either USB or LAN, the baud rate
in this screen must be set to 460800. See UTILITY 2 screen for other
LAN setup parameters.
RS232 DATA This field is used to set the number of data bits to either 7 or 8.
Factory setting is 8 bits. This value must match the number of data
bits set on the communications port of the controller. For USB or
LAN use, always use factory settings.
RS232 PARITY This field is used to set the parity. Available options are Even (E),
Odd (O) or no parity (N). Factory setting is No parity. This value must
match the parity set on the communications port of the controller. For
USB or LAN use, always use factory settings.
RS232 STPBITS This field is used to set the number of stop bits used on the serial port.
Available options are 1 or 2 bits. Factory setting is 1 stop bit. This
value must match the parity set on the communications port of the
controller. For USB or LAN use, always use factory set ti ngs.
The number of start bits is always fixed to 1 bit.
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User Manual AMETEK Programmable Power
5.2.8.2 VOLTAGE/CURRENT CONTROL SETUP menu
Figure 5-19: VOLTAGE/CURRENT CONTROL SETUP Menu
The VOLTAGE/CURRENT CONTROL SETUP menu may be used to set output voltage and current
control parameters. These parameters are not frequently changed in the normal operation of the AC source
and are thus located on the UTILITY rather than the PROGRAM menu.
The following options are available in this menu:
ALC MODE Automatic Level Control of programmed output voltage. This mode
will use the internal voltage measurements to adjust the output voltage
continuously as needed. This effectively increases the output accuracy
and regulation beyond what is possible with ALC off.
OL MODE This field is used to select constant current (CC) or constant voltage
(CV) mode. The constant current mode will limit the maximum
amount of current drawn by the load to the set value. The voltage will
be reduced as needed after the trip delay time to maintain the level of
programmed current.
The constant voltage mode will maintain the set voltage as long as the
current drawn by the load does not exceed the current limit
programmed. If the current limit is exceeded, the output will be shut
off after the trip delay time.
TRIP DELAY The trip delay field may be used to set the amount of time to hold off
the current limit trip point. The minimum amount of time is 100 ms or
0.1 sec. The maximum amount of time is 5.00 sec.
VOLT SENSE This field selects the internal or external sense line inputs. Internal
sense does not require the external sense lines to be connected as
sensing occurs at the output relay of the AC source. For best results,
connect the external sense lines and select the EXT sense mode in this
field. This will compensate for voltage drop in the cables to the load.
The measurements are also taken at the sense points, so the external
sense mode should be used for best measurement results.
NO. OUTPUT This field is always set to three to indicate the 3 phase output
configuration of the BPS Series.
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User Manual AMETEK Programmable Power
5.2.8.3 INITIAL SETUP menu
Figure 5-20: INITIAL SETUP Menus
Any time the power source is powered up, the output will reflect the values stored as the INITIAL setup
values. This allows the unit to be powered up in a known state at all times. The INITIAL values can be set
in the INITIAL SETUP menus.
The initial setup can be used to power up the power source with the output on and a high voltage present
at the output. For normal situations, this is not recommended due to the potential danger to the operator. It
is recommended that the initial voltage be set low and/or the output relay be programmed to OFF for most
situations.
The following fields are provided in the INITIAL SETUP menus:
Entry Description
INITIAL SETUP 1
VOLTAGE Sets the power-on AC voltage for AC and AC+DC modes or the DC
voltage for DC mode.
CURR LIMIT Sets the power-on current limit value.
FREQ Sets the power-on frequency value.
PHASE Sets the power-on frequency for phase A with respect to an external
sync signal. If the internal oscillator is used (default) this setting has
no effect.
INITIAL SETUP 2
VOLT RANGE Sets the power-on voltage range value.
VOLT MODE Sets the power-on voltage mode. Available settings are AC mode, DC
mode or AC+DC mode.
OL MODE Sets the power-on overload mode. Available settings are Constant
Current (CC) or Constant Voltage (CV) mode.
OUTPUT RELAY Sets the power-on state of the output relay. Available settings are ON
or OFF.
INITIAL SETUP 3
VOLT SENSE Sets the power-on state of the voltage sense mode. Available settings
are Internal (INT) or External (EXT).
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User Manual AMETEK Programmable Power
WAVE GROUP Sets the user defined waveform group that will be loaded at power on.
Available groups are 0, 1, 2 and 3. Each group can contain up to 50
user-defined waveforms. A waveform group can only be loaded at
power up. To change groups, you must change this field to the desired
new group and cycle the power to the AC source or issue a *RST
command over one bus.
CLOCK MODE Sets the clock source used at power up. Available settings are Stand
Alone (STAND), MASTER (-LKM clock and lock master), and AUX
(-LKS clock and lock auxiliary).
NO. OUTPUT This field is always set to THREE can cannot be changed. It reflects
the three phase output configuration of the BPS Sereis.
VOLT ALC Determines ALC mode at power on. The ALC mode adjusts the
output voltage based on internal voltage measurement system and
provides enhanced output regulation and accuracy. Available settings
are ON, OFF or REG.
BPS Series 88
User Manual AMETEK Programmable Power
5.2.8.4 LIMIT SETUP screen
Figure 5-21: LIMIT SETUP Menu
The limit setup screen is not a menu but only serves to inform the user of the hardware capabilities of the
AC source. The cursor can be moved to any of the fields in this screen but none of these fields can be
changed. The following information is provided on this screen:
Entry Description
VOLTAGE Maximum AC rms or DC voltage available in the high voltage range.
CUR LIMIT Maximum AC rms current limit available in the low voltage range.
FREQ LO Lowest possible fundamental frequency that can be programmed.
FREQ HI Highest possible fundamental frequency that can be programmed.
PHASE C Phase angle of phase C with respect to phase A in three phase mode. If
the AC source is a single phase model, this field will shown 0°. If the
AC source is a split phase model, this field will shown 180°.
BPS Series 89
User Manual AMETEK Programmable Power
5.2.8.5 CONFIGURATION SETUP screens
Figure 5-22: CONFIGURATION SETUP Menus
The configuration setup screens are not menus but only serve to inform the user of the software options
installed in the AC source. The cursor can be moved to any of the fields in this screen but none of these
fields can be changed. The following information is provided on this screen:
Entry Description
CONFIGURATION SETUP 1
NO. OUTPUT Displays the phase mode option. SELECT indicates the phase mode
option is installed and the user can select between single and three
phase modes of operation.
FIXED indicates the phase mode option is not installed and only
single phase or three phase mode of operation is possible.
CONFIGURATION SETUP 2
LF Indicates the presence of the Low Frequency limit option. If this
option is set, the maximum frequency that can be programmed is 500
Hz.
SYSTEM This field sets the controller for the correct BPS system configuration.
Available settings are:
BPS30-1 Single phase BPS30 system Master
BPS30-3 Three phase BPS30 system Master
BPS45-1 Single phase BPS45 system Master
BPS45-3 Three phase BPS90 system Master
BPS75-3 Three phase BPS75 system Master
BPS90-3 Three phase BPS90 system Master
BPS150-3 Three phase BPS150 system Master
BPS180-3 Three phase BPS180 system Master
AUX Three phase Auxiliary System.
BPS Series 90
User Manual AMETEK Programmable Power
If this field is set incorrectly, the current limit scaling and current
measurement will be off by a factor of three. Changes made to the
SYSTEM field will not take effect until AFTER power on the BPS
system is cycled. (Off, then back on).
CONFIGURATION SETUP 4
LAN This field indicates the presence of the LAN Ethernet interface option.
ON indicates the option is present, N/A indicates the option is not
installed. Not all features indicated are available on this model.
5.2.9 MEASUREMENT CAL FACTORS Menu
Figure 5-23: MEASUREMENT CAL FACTORS Menu.
The MEASUREMENT CAL FACTORS menu provides access to the measurement calibration
parameters. The parameters apply to the selected mode of operation (AC mode only). For three phase
configurations, the PHASE keys toggle between the three calibration screens for each phase. These
parameters are password protected and can only be changed after the calibration password has been
entered. Refer to the calibration section in this manual for details on performing a calibration.
Entry Description
VOLT FS Full scale voltage measurement calibration factor.
CURR FS Full scale current measurement calibration factor.
BPS Series 91
User Manual AMETEK Programmable Power
5.2.10 OUTPUT CAL FACTORS Menu
Figure 5-24: OUTPUT CAL FACTORS Menu (Series II only)
The OUTPUT CAL FACTORS menu provides access to the output calibration parameters. These
parameters are password protected and can only be changed after the calibration password has been
entered. For three phase configurations, the PHASE keys toggle between the three calibration screens for
each phase. Refer to the calibration section in this manual for details on performing a calibration.
The following calibration factors are available from this menu:
Entry Description
VOLT FS Full scale voltage output calibration factor.
VOLT ZERO Zero offset voltage calibration factor.
PHASE OFST Phase offset calibration factor. Compensates for phase shift caused by
AC amplifier.
BPS Series 92
User Manual AMETEK Programmable Power
5.3 Output Programming
5.3.1 Set the Output
Output parameters are all set from the PROGRAM screen.
1. Use the MENU key and select the PROGRAM entry.
2. Press the ENTER key to bring up the PROGRAM menu.
or
2. Use the PROG key to directly bring up the PROGRAM menu.
There are two methods for programming output parameters:
IMMEDIATE mode
SET mode
5.3.2 Slewing Output Values with the Knob in IMMEDIATE Mode
The default mode of operation is an immediate mode in which changes to output parameters made with
the knob or the entry keypad are immediately reflected at the output.
To change the output voltage:
Counter
Clock
wise
Clock
wise
INCRDECR
1. Place the cursor on the VOLTAGE entry
2. Rotate the knob clo ckwise to increase the value, counterclockwise to decrease the value
These changes take effect immediately.
To change the output frequency:
Counter
Clock
wise
Clock
wise
INCRDECR
1. Place the cursor on the FREQ entry
2. Rotate the knob clo ckwise to increase the value, counterclockwise to decrease the value
These changes take effect immediately.
5.3.3 Change Output Values with the Knob in SET Mode
The SET mode of operation is a mode in which changes to output parameters made with the knob or the
entry keypad do not affect the output until the ENTER key is pressed. The AC source is put in this SET
mode by pressing the SET key.
BPS Series 93
User Manual AMETEK Programmable Power
To change the output voltage:
Counter
Clock
wise
1. Press the SET key
2. Place the cursor on the VOLTAGE entry
3. Rotate the knob clo ckwise to increase the value, counterclockwise to decrease the value
4. The VOLTAGE field will be blinking to indicate a change in settings but the output remains
unchanged.
5. Place the cursor on the FREQ entry
6. Rotate the knob clo ckwise to increase the value, counterclockwise to decrease the value
7. The FREQ field will be blinking to indicate a ch ange in settings but the output remains unchanged.
8. Press the ENTER key.
Both new voltage and frequency output values are now present at the output. The unit has returned to
immediate mode of operation until the SET key is pressed again.
5.3.4 Change Output Values with the shuttle knob from the MEASUREMENT 1 screen
Clock
wise
INCRDECR
Basic output settings such as voltage and frequency can be changed from the MEAS 1 screen by using the
following procedure:
1. Select the PROGAM 1 screen by pressing the PROG key and position the curso r on either the Voltage
or Frequency setting field.
2. Select the MEASUREMENT 1 screen by pressing the MEAS key. A small arrow will be showing in
front of either the Voltage or Frequency measurement readout.
3. The shuttle knob can now be used to increment or decrement the selected parameter.
If three-phase mode is selected in the MEASUREMENT 1 screen, slewing the knob while the voltage is
selected will change the output voltage on all three phases. If only one phase is selected, only the output of
the selected phase will be affected.
5.4 Standard Measurements
Standard measurements are always available through the MEAS key on the front panel. These
measurements are spread across two to four screens to enhance readability. Switching between these
screens can be done by successively pressing the MEAS button on the front panel. This will cause the
screen to cycle through all available measurement screens.
5.4.1 Standard Controller Measurements
For BPS Series power sources, the following two measurement screens are available:
Mode AC DC
MEASUREMENTS 1
VOLTAGE AC rms voltage DC Voltage
CURRENT AC rms current DC Current
FREQUENCY Frequency n/a
BPS Series 94
User Manual AMETEK Programmable Power
Mode AC DC
POWER Real power power
MEASUREMENTS 2
VA POWER Apparent power power
PEAK CURR Highest AC current
found
POWER FACT Power factor n/a
CREST FACT Crest factor n/a
Highest DC current
found
BPS Series 95
User Manual AMETEK Programmable Power
5.4.2 Controller Measurements
For BPS Series the following four measurement screens are available:
Mode AC
MEASUREMENTS 1
VOLTAGE AC rms voltage
CURRENT AC rms current
FREQUENCY Frequency
POWER Real power
MEASUREMENTS 2
VA POWER Apparent power
PEAK CURR Highest AC current
found
POWER FACT Power factor
CREST FACT Crest factor
MEASUREMENTS 3
VOLT THD Voltage distortion
CURR THD Current distortion
INST PK CURR Instantaneous peak
current
PHASE Phase angle
Note: The V and I distortion calculations are based on H2 through H50 with the RMS current in the
denominator. Note that some definitions of THD use the fundamental component (H1) as the denominator.
This may result in different readings between instruments depending on the implementation chosen.
Measurements are always running in the background. When the user selects a measurement screen for
display, the AC source first updates all the measurement parameters before displaying the requested
screen. This process may take up to a second. Consequently, pressing the MEAS key may not always
bring up the selected screen immediately. There will be a perceptible delay. This will prevent the screen
from appearing with invalid or blank readouts.
The measurement method for voltage and current will depend on the power source’s operating mode. The
following table shows the return value type (rms or average) and method of coupling when the
measurement command is initiated with a different extension in AC operating mode.
Measurement
Operating Mode
Extension and
Coupling
AC
AC rms
DC rms
Coupling AC
5.4.3 Accuracy Considerations
Any measurement system has a finite accuracy specification. Measurement specifications are listed in
Section 2. When using the AC source for measurement purposes, always consider these specifications
when interpreting results. Measurement inaccuracies become more pronounced as the signal being
measured is at the low end of the measurement range. This is particularly relevant for low current
measurements. The BPS Series is a high power AC source optimized for providing and measuring high
BPS Series 96
User Manual AMETEK Programmable Power
load currents. When powering low power loads, measurement inaccuracies on rms and peak current
measurements will greatly affect derived measurements such as power, power factor and crest factor.
The measurement system on the BPS Series uses a data acquisition system with a 16 kHz bandwidth. This
means that high frequency components of the measured signal are filtered out. Any contribution to the rms
value of voltage and current above this cutoff frequency will not be reflected in the BPS Series
measurements. When using an external measurement reference, this may account for discrepancies in
readings.
5.4.4 Triggering Measurements
Both FFT results and waveform acquisitions may have to be positioned at a specific moment in time. To
allow the data acquisition to coincide with user specified events, the measurement system can be triggered
in different ways. Trigger modes are available from both the bus and the front panel. If one of the remote
control interfaces is used, acquisitions may also be triggered from the transient list system. Refer to the
programming manual for details on this mode of operation.
5.4.4.1 Trigger mode
The following trigger modes are supported by the BPS Series controller:
Single (SINGLE) This mode causes the acquisition system to be armed only once. The
BPS source waits for the user to press the ENTER key while on the
START field. As soon as the trigger event specified occurs, data is
acquired and the acquisition system is put in an idle state. A new user
initiated START event must be given to trigger a new acquisition.
This mode is appropriate for capturing events that occur only once
Continuous (CONT) This mode causes the trigger system to re-arm itself after each trigger
This mode is appropriate for capturing repetitive events or to monitor
5.4.4.2 Trigger source
The BPS Series controller offers a choice of trigger sources in front panel operation mode. The following
trigger sources are available from the TRIG SOURCE field:
Immediate (IMM) This mode causes a trigger to occur as soon as the ENTER key is
This trigger source is appropriate if no trigger condition is known or
Phase (PHASE A) This mode causes the BPS acquisition system to wait for a specified
such as the inrush current when turning on a load.
event. Every time a new trigger event occurs, new data is acquired and
the LCD display is updated. No user intervention is required after the
initial START event.
the source output continuously. Display updates will occur about once
per second.
pressed with the cursor on the START field. No trigger source needs
to be specified for this trigger mode. This mode is equivalent to the
INIT:IMM:ACQ bus command.
desired. When using this trigger source, the acquisition is always
triggered.
phase angle on the phase A voltage output. This allo ws t he acqui si t i on
to be positioned in time with respect to any phase angle on phase A, B
or C. Note that phase A, B and C are typically at 0°, 240° and 120°
with respect to the specified trigger phase in this field. An example of
this trigger source mode is shown in Figure 5-26.
BPS Series 97
User Manual AMETEK Programmable Power
When selecting this trigger source, the field below the TRIG
SOURCE field changed to “TRIG PHASE =“. Use this field to enter
the desired voltage phase angle to trigger the measurement on.
This mode is appropriate when capturing analyzing events at a
specific phase angle such as the zero crossing of the voltage. Note that
the phase angle of the current with respect to the voltage is determined
by the load, so triggering at a specific phase current angle is not
possible as it is not controlled by the AC source. However, when
capturing current waveform data, the phase relationship to the voltage
can be determined easily by triggering at the 0° point on the voltage.
Voltage step (SET VOLT) This mode performs two functions. It programs the output voltage for
the selected phase or phases to the rms or DC value specified and it
triggers the measurement acquisition at the same moment in time.
When selecting this trigger source, the field below the TRIG
SOURCE field changed to “SET VOLT =“. Use this field to enter the
desired voltage to program the output to and trigger the measurement
on. If only one phase in a three phase system is selected, only that
phase’s output will be programmed. If all phases are selected, all three
phases’ outputs will be programmed. Use the PHASE key to select the
desired phase or all phases. Figure 5-25 shows an example of using
the SET VOLT trigger source to capture the turn-on of the voltage. In
this case, a negative trigger delay was specified and the voltage start
phase angle was set to 90° in the PROGRAM 2 screen.
TRIGGER
DELAY
START
[ENTER]
ACQUISITION WINDOW
TRIGGER =
SET VOLT 120
Figure 5-25: SET VOLT Trigger Source Acquisition
BPS Series 98
User Manual AMETEK Programmable Power
This mode is appropriate for capturing the inrush current of a load by
programming the voltage to a specified value and capturing the
voltage and current at that moment in time. A further refinement can
be made by specifying the voltage start phase angle in the PROGRAM
2 screen. If this field is changed from RANDOM to 90°, the inrush
current can be captured under worst case conditions. In this case, the
voltage should be programmed to 0 volt before triggering the
acquisition using the START field.
Note: When using the SET VOLT trigger source, the output relay MUST be closed to generate a
trigger. If the output is open, the acquisition will be armed when the START [ENTER] key is
pressed but will wait for the trigger event. Closing the output relay will generate the trigger
event. If the output relay was already closed when the START [ENTER] key is pressed, the
trigger will occur immediately.
BPS Series 99
User Manual AMETEK Programmable Power
5.4.4.3 Trigger delay
The trigger delay field allows the user the set the amount of pre- or post-trigger data that should be used
when positioning the data acquisition window with respect to the trigger moment.
POST-TRIGGER DELAY
A positive trigger delay value means the acquisition window is delayed by the amount of time specified.
In this case, the actual trigger moment itself is no longer present in the acquisition buffer. This situation is
shown in Figure 5-26 where a 20 ms trigger delay is used after triggering on phase A = 180°. The
fundamental frequency of the output is 50 Hz. The dashed line indicates the trigger point. It occurs on the
first 180 degree point that occurs after the user presses the ENTER key while on the START field. Once
the trigger occurs, the acquisition holds off the specified 20 ms at which point the data requested is
captured. Using a positive trigger delay value always yields post trigger data.
Positive trigger delay values may be set from 0.0 ms to 1000.0 ms (1 second) in 0.1 ms increments. The
value may be entered directly from the keyboard or using the knob.
BPS Series 100
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