KEPCO BOP 200W, BOP 100-1, BOP 20-10, BOP 36-6, BOP 50-4 Operator's Manual

OPERATOR’S MANUAL

BOP (M) (D) 100W, 200W, 400W

BIPOLAR POWER SUPPLY

100W: BOP 20-5, BOP 50-2, BOP 100-1

200W: BOP 20-10, BOP 36-6, BOP 50-4, BOP 72-3, BOP 100-2, BOP 200-1

400W: BOP 20-20, BOP 36-12, BOP 50-8, BOP 72-6, BOP 100-4

KEPCO INC.

An ISO 9001 Company.

MODEL

BOP 100W, 200W, 400W

POWER SUPPLY

IMPORTANT NOTES:

1) This manual is valid for the following Model and associated serial numbers:

MODEL SERIAL NO. REV. NO.

2) A Change Page may be included at the end of the manual. All applicable changes and
revision number changes are documented with reference to the equipment serial num­bers. Before using this Instruction Manual, check your equipment serial number to identify
your model. If in doubt, contact your nearest Kepco Representative, or the Kepco Docu­mentation Office in New York, [phone], requesting the correct revision for your par­ticular model and serial number.

3) The contents of this manual are protected by copyright. Reproduction of any part can be
made only with the specific written permission of Kepco, Inc.

Data subject to change without notice.

©2013, KEPCO, INC.

P/N 243-1308-r5a

KEPCO, INC. z 131-38 SANFORD AVENUE z FLUSHING, NY. 11355 U.S.A. z TEL [phone] z FAX [phone]

KEPCO®

THE POWER SUPPLIER™

email: [e-mail] z World Wide Web: http://www.kepcopower.com

INSTRUCTION MANUAL CORRECTION

KEPCO®

THE POWER SUPPLIER™

LOAD REACTANCE, PARAGRAPH 1-10D, add the following:

There are two means of eliminating oscillation in the current loop operating with moderate
inductive loads and moderate voltage and current:

1. Add capacitance in parallel with the output (inductive load). The value of capacitor can be
from 0.1 uF to 1.0 uF depending on the value of the load inductance.

2. Add a series-connected resistor capacitor network in parallel with the output (inductive load).
The value of resistor should be in the range of 100 to 500 Ohms and the value of capacitor
should be 0.1 uF to 0.5 uF, depending on the load inductance value.

Both options are recommended when the BOP is used with very low frequency output into
inductive loads.

NOTE:BOP 200W and 400W units may be converted to ML units in order to eliminate oscilla-

tion when dealing with a large range of inductive load values. This upgrade must be
accomplished at the Kepco factory in Flushing New York and includes component
changes and re-calibration of the unit. Please contact Kepco Sales for price and delivery
schedule regarding this upgrade.

KEPCO MODELS:
BOP 100W, BOP 200W, BOP 400W

When driving heavy inductive loads with high currents, it is possible for the BOP and the load to
be damaged by an A-C input power loss which prevents the load's stored energy from being
dissipated inside the BOP. To avoid possible damage observe the following:

• Use UPS to supply the BOP.

• Set BOP output current and/or voltage to zero and turn off the BOP after the output current
actually reaches a zero value.

• Use properly rated (voltage and current) bipolar transorbs or a properly rated bipolar crow­bar element connected directly at the output of the BOP. An alternative is an A-C Normally
Closed Contactor connected directly at the output of the BOP. These options may also be
combined.

BOP/093013

KEPCO, INC. z 131-38 SANFORD AVENUE z FLUSHING, NY. 11355 U.S.A. z TEL [phone] z FAX [phone]

email: [e-mail] z World Wide Web: http://www.kepcopower.com

1

AFTER PAR. 3-3 B) LOAD CONNECTION (I) and PAR. 3-3 C) LOAD CONNECTION (II)
add the following:

Load connections to the BOP power supply are achieved via the OUTPUT and COMMON ter­minals located on either the front or the rear panel, but not both. Sense connections must be
made from the same location (front or rear panel) as the output and common connections.

AFTER PAR. 3-3 D) A-C GROUND add the following:

The GROUND terminal is connected to CHASSIS of the unit and to the local EARTH-GROUND
potential through the A-C power line cord. It can be used a) as a monitoring reference point, b)
as a grounding point for the output of the unit, and c) for doubling the a-c power cord EARTH­GROUND connection if necessary by providing a separate connection to the local EARTH­GROUND point.

CAUTION: NEVER CONNECT THE BOP OUTPUT TERMINAL (OR THE LOAD TERMINAL TIED TO

THE OUTPUT TERMINAL) TO EARTH-GROUND. OTHERWISE, IF THE CONTROLLING
DEVICE IS GROUNDED, THE BOP CAN BE DAMAGED BY THE OUTPUT LIMIT CUR­RENT FLOWING INSIDE THE BOP ALONG THE PROGRAMMING SIGNAL RETURN
PATH.

CAUTION: DO NOT CONNECT BOTH THE LOAD AND THE PROGRAMMING DEVICE RETURN

(COMMON) TO EARTH-GROUND POTENTIAL AND DO NOT USE THE PROGRAMMING
RETURN TERMINAL AS A TAP POINT FOR THE LOAD RETURN. OTHERWISE, IF THE
COMMON POWER CONNECTION BETWEEN THE BOP AND THE LOAD IS LOST, THE
BOP CAN BE DAMAGED BY OUTPUT CURRENT FLOWING INSIDE THE BOP ALONG
THE PROGRAMMING SIGNAL RETURN PATH.

CAUTION: DO NOT USE THE PROGRAMMING RETURN TERMINAL AS A TAP POINT FOR THE

LOAD RETURN BECAUSE THE BOP CAN BE DAMAGED BY OUTPUT CURRENT
FLOWING INSIDE THE BOP ALONG THE PROGRAMMING SIGNAL RETURN PATH.

AFTER PAR. 3-3 E) D-C (SIGNAL) GROUND add the following:

The GROUNDING NETWORK terminal is tied to GROUND (CHASSIS) terminal through a
series capacitor-resistor network. Connecting the GROUNDING NETWORK terminal to the
COMMON terminal reduces common noise current flowing through the load and, if a BIT card is
installed, it ensures that the dynamic swing of the output does not affect the digital section.

AFTER PAR. 3-3 J) EXTERNAL LEADS add the following:

K) EXTERNAL VOLTAGE MONITOR. Use signal E

Monitor Output at pin 20 of the PC12 pro-

O

gramming connector (see Figure 4-5) for external voltage monitoring. Caution should be exer­cised in handling this signal: use a series 5K resistor in combination with a high impedance
monitoring device, or an external high impedance buffer between the BOP and the monitoring
device. This signal is buffered by OPAMP IC23 (see Figure 6-4) which functions as a repeater
for the signal coming from the RN3 matched pair divider connected at the output. There is no
overvoltage protection. This stage is protected against short-circuit by the intrinsic protection of
the OPAMP generating this signal. This signal is used by the BIT card if it is installed.

2

L) EXTERNAL CURRENT MONITOR. Use signal IO Sensing Output at pin 10 of the PC12 pro­gramming connector (see Figure 4-5) for external current monitoring. This signal is not buff­ered. Use a series 5K resistor in combination with a high impedance monitoring device, or an
external high impedance buffer between the BOP and the monitoring device. CAUTION: An

accidental short-circuit at this terminal while the unit is in Current mode or Current limit
mode will damage the BOP power stage. There is no overvoltage protection. This stage is

protected against short-circuit by the intrinsic protection of the OPAMP generating this signal.
This signal is used by the BIT card if it is installed.

DIGITAL CONTROL OF BOP POWER SUPPLIES, PARAGRAPH 3-46 add the following:

The SN and SNR Programmers and the BIT 488 cards described in this manual are older meth­ods of controlling BOP power supplies via digital means. Although these products still function
as described, the recommended method of digital control is now the use of Kepco’s BIT 4886
16-bit plug-in card with resolution of 1/2

16

. This plug-in card provides talk-listen support for the
IEEE 488.2 bus using SCPI commands. The BIT 4886 card allows a BOP to communicate as a
stand-alone instrument, directly on the GPIB. The BIT 4886 card also allows the BOP to be pro­grammed over the RS232C bus using either SCPI or CIIL commands via either an RS232-C
terminal, or from a PC using a terminal emulation program with a baud rate of 9600, no parity,
eight data bits and one stop bit. The downloadable BIT 4886 driver supports digital calibration
(no manual pots) and multiple control and read-back ranges, For more information refer to:
www.kepcopower.com/bit.htm.

PERIODIC MAINTENANCE, PARAGRAPH 5-6, add the following:

To clean the unit, proceed as follows:

1. Disconnect the unit from mains power.

2. Using a damp, lint-free cloth, wipe the exterior of the unit to remove accumulated dirt.

3. Reconnect AC power to the unit.

MASTER/SLAVE PARALLEL CONNECTIONS, PARAGRAPH 3-44, add the following:

For two or more two parallel units, refer to Figure 3-27A, below. This configuration is more sta­ble and accurate than the simple configuration shown in Figure 3-27; it eliminates the parasitic
voltage drop on the COM connection of the slaves.

3

PART OF

PC 12

28

C

22

10

TWIST

PART OF

PC 12

44

43

28

C

22

10V

+

+

10V

MASTER

(EXT.) R1A

(EXT.) R2A

NOTE 3

10V

+

+

10V

20K

20K

PART OF

OFF

ON

VOLTAGE

CONTROL

VOLTAGE

PROGRAMMING

INPUT

NOTE 3

(EXT.) R1B

(EXT.) R2B

OFF

ON

CURRENT
CONTROL

PC 12

20K

20K

10K

10K

10K

7

9

11

C

CONTROL CHANNEL

C

PART

OF

PC 12

4

13

15

C

CONTROL CHANNEL

NOTES (MASTER):

10K

-

PREAMP

"A"

+

ZERO

-

17

Eo COMP

AMP

+

BOP VOLTAGE

NOTES (SLAVE 1):

1. MODE Switch position to: CURRENT

2. CURRENT CONTROL Switch to: OFF

3. R1 (A and B) and R2 (A and B) are matched
pairs, 0.01% tolerance, metal film, 0.25W.

4. Remove PC 12 jumpers between pins 4 and 13
and between pins 15 to 27.

10K

-

PREAMP

"B"

+

ZERO

BOP CURRENT

1. For Voltage Mode (shown) set MODE Switch to VOLTAGE and
VOLTAGE CONTROL Switch to ON.

2. For Current mode, set MODE Switch to CURRENT and CURRENT
CONTROL Switch to ON.

3. If external control is needed, set the CONTROL switch to OFF and
use either the corresponding VOLTAGE or CURRENT

5

PROGRAMMING INPUT or the appropriate PC 12 terminals.

DRIVER

G
A
T
E

Io SENSING

Eo ZERO

2

AMP

19

-

+

COMMON

-

Io COMP

AMP

+

POWER

STAGE

Io ZERO

POWER

STAGE

G
A
T
E

R

SCOM

DRIVER

R

OUT

OUT

COMS

S

REMOVE

LINKS

S

S

TWIST

LOAD

TWIST

DRIVER

R

S

OUT

COM

S

S

S

TWIST

GENERAL NOTES:

1. SYSTEM IS SET IN VOLTAGE
MODE, LOCAL CONTROL,
REMOTE SENSING.

2. FOR MASTER AND SLAVE(S)
PIN C OF PC 12 CONNECTOR
IS THE "C" POINT (COMMON),
AND IS AVAILABLE AT PINS 23,
25, 27, 29, 31 AND 33 OF THE
PC 12 CONNECTOR.

3043677

TWIST

PART OF

PC 12

44

43

28

C

22

SLAVE 1

(EXT.) R1A

20K

(EXT.) R2A

20K

NOTE 3

10V

+

+

10V

SLAVE 2

OFF

ON

NOTE 3

(EXT.) R1B

CURRENT
CONTROL

20K

(EXT.) R2B

20K

10K

PART OF

PC 12

C

4

13

15

C

NOTES (SLAVE 2):

1. MODE Switch position to: CURRENT.

2. CURRENT CONTROL Switch to: OFF.

3. R1 (A and B) and R2 (A and B) are matched
pairs, 0.01% tolerance, metal film, 0.25W.

4. Remove PC 12 jumpers between pins 4 and 13
and between pins 15 to 27.

10K

-

PREAMP

"B"

+

ZERO

BOP CURRENT

CONTROL CHANNEL

19

-

Io COMP

+

2

COMMON

AMP

Io ZERO

COMMON

POWER

STAGE

G
A
T
E

FIGURE 3-27A. ALTERNATIVE MASTER/SLAVE PARALLEL CONNECTION (FOR MORE PRECISE AND

STABLE CONTROL) OF TWO OR MORE BOP POWER SUPPLIES

4

Declaration of Conformity

Application of Council directives:

Standard to which Conformity is declared:

EN61010-1:2001 (Safety requirements for electrical equipment for measurement,

control and laboratory use - Part 1)

Manufacturer's Name and Address:

Importer's Name and Address:

Type of Equipment:

Model No.:

73/23/EEC (LVD)
93/68/EEC (CE mark)

KEPCO INC.
131-38 SANFORD AVENUE
FLUSHING, N.Y. 11355 USA

P

O

C

E

V

I

T

A

T

N

E

S

E

R

P

E

R

Component Power Supply

[PRODUCT MODEL NUMBER]

Y

Year of Manufacture:

I, the undersigned, declare that the product specified above, when used in conjunction with the condi­tions of conformance set forth in the product instruction manual, complies with the requirements of the
Low Voltage Directive 73/23/EEC, which forms the basis for application of the CE Mark to this product.

Place: KEPCO Inc.

131-38 Sanford Ave.
Flushing, N.Y.11352 USA

Saul Kupferberg

(Full Name)

Date:

228-1348 DC-COMP/INST 062810 A

VP OF SALES

(position)

Conditions of Conformance

When this product is used in applications governed by the requirements of the EEC, the following restric­tions and conditions apply:

1. For European applications, requiring compliance to the Low Voltage Directive, 73/23/EEC, this power
supply is considered a component product, designed for "built in“ applications. Because it is incom­plete in construction, the end product enclosure must provide for compliance to any remaining electri­cal safety requirements and act as a fire enclosure. (EN61010-1:2010, Cl. 6, Cl. 7, Cl.8, and Cl. 9)

2. This power supply is designed for stationary installation, with mains power applied via a detachable
power supply cord or via direct wiring to the source power terminal block.

3. This power supply is considered a Class 1 (earthed) product, and as such depends upon proper con­nection to protective earth for safety from electric shock. (EN61010-1 Cl. 6.5.5)

4. This power supply is intended for use as part of equipment meant for test, measurement and labora­tory use, and is designed to operate from single phase, three wire power systems. This equipment
must be installed within a suitably wired equipment rack, utilizing a three wire (grounded) mains con­nection. See wiring section of this manual for complete electrical wiring instructions. (EN61010-1 Cl.

6.5.5 and Cl.6.10.1)

5. This power supply has secondary output circuits that are considered hazardous, and which exceed
240 VA at a potential of 2V or more.

6. The output wiring terminals of this power supply has not been evaluated for field wiring and, therefore,
must be properly configured by the end product manufacturer prior to use.

7. This power supply employs a supplementary circuit protector in the form of a circuit breaker mounted
on the front panel. This circuit breaker protects the power supply itself from damage in the event of a
fault condition. For complete circuit protection of the end product, as well as the building wiring, it is
required that a primary circuit protection device be fitted to the branch circuit wiring. (EN61010­1:2010, Cl. 9.6)

8. Hazardous voltages are present within this power supply during normal operation. All operator adjust­ments to the product are made via externally accessible switches, controls and signal lines as speci­fied within the product operating instructions. There are no user or operator serviceable parts within
the product enclosure. Refer all servicing to qualified and trained Kepco service technicians.

B 228-1351 COND/CONFORM 100913

SAFETY INSTRUCTIONS

1. Installation, Operation and Service Precautions

This product is designed for use in accordance with EN 61010-1 and UL 3101 for Installation Category 2,
Pollution Degree 2. Hazardous voltages are present within this product during normal operation. The
product should never be operated with the cover removed unless equivalent protection of the operator
from accidental contact with hazardous internal voltages is provided:

!

!

!

There are no operator serviceable parts or adjustments within the product enclosure.
Refer all servicing to trained service technician.

Source power must be removed from the product prior to performing any servicing.

This product is factory-wired for the nominal a-c mains voltage indicated on the rat­ing nameplate located adjacent to the source power connection on the product's rear
panel. To reconfigure the product input for other nominal mains voltages as listed
herein, the product must be modified by a trained service technician.

2. Grounding

This product is a Class 1 device which utilizes protective earthing to ensure operator safety.

The PROTECTIVE EARTHING CONDUCTOR TERMINAL must be properly con-

!

nected prior to application of source power to the product (see instructions on instal­lation herein) in order to ensure safety from electric shock.

PROTECTIVE EARTHING CONDUCTOR TERMINAL - This symbol indicates the
point on the product to which the protective earthing conductor must be attached.

EARTH (GROUND) TERMINAL - This symbol is used to indicate a point which is
connected to the PROTECTIVE EARTHING TERMINAL. The component installer/
assembler must ensure that this point is connected to the PROTECTIVE EARTH­ING TERMINAL.

CHASSIS TERMINAL -This symbol indicates frame (chassis) connection, which is
supplied as a point of convenience for performance purposes (see instructions on
grounding herein). This is not to be confused with the protective earthing point, and
may not be used in place of it.

3. Electric Shock Hazards

This product outputs hazardous voltage and energy levels as a function of normal operation. Operators
must be trained in its use and exercise caution as well as common sense during use to prevent accidental
shock.

This symbol appears adjacent to any external terminals at which hazardous voltage

!

228-1352 SAFETY - (COVER REMOVAL) 062810 C/(D BLANK)

levels as high as 500V d-c may exist in the course of normal or single fault condi­tions.

This symbol appears adjacent to any external terminals at which hazardous voltage
levels in excess of 500V d-c may exist in the course of normal or single fault condi­tions.