SST-2400H
SST-2000 Series
Universal Speed Switch & Speed
Transmitter
An Operator’s Guide
Copyright
Specifications and information herein are subject to change without notice.
Dynalco Controls reserves the right to make changes to the equipment described
herein to improve function or design. Although the information contained in this
manual has been carefully reviewed and is believed to be reliable, Dynalco
Controls does not assume any liability for special, indirect, incidental, or
consequential damages arising out of the application or use of the equipment
described herein. Warranty is limited and cannot exceed the price paid for the
product upon which the warranty is based.
Copyright 2001. All rights reserved.
Trademarks
SST-2000A/H, SST-2200A, SST-2400H are trademarks of Dynalco Controls.
Dynalco Controls
3690 N.W. 53rd Street,
Fort Lauderdale, FL 33309 U.S.A.
( (954) 739-4300
Fax (954) 484-3376
www.dynalco.com • mailbox@dynalco.com
Printed in U.S.A.
ii
Contents
Chapter 1 Getting Started 1
About your speed switch ........................................2
Models......................................................4
Features.....................................................4
Specifications.................................................5
Chapter 2 Installing the SST-2000A/H 9
Mounting the unit ............................................10
About Electrical Connections ...................................10
Connecting Signal Inputs.......................................11
Chapter 3 Powering External Devices 13
Powering an SPD-100, SPD-700, or other frequency instruments ........14
Using DPM-105 meters as external speed indicators ..................14
Powering Zero Velocity Pickups and Other Loads ...................16
Driving an SPV-200 Solenoid Pneumatic Valve .....................17
Chapter 4 Calibrating the Speed Switch 19
Locating the programming switch instructions ......................20
Changing the full-scale input frequency range .......................21
Input frequency range less than 80 Hz full-scale ......................21
Input frequency range greater than 20,000 Hz full-scale ................21
Calibrating the SST-2000A/H ...................................22
Calibrating the 4-20 mA Proportional Output .......................24
Programming Set Points and Relays ..............................25
Adjusting Signal Sensitivity.....................................27
Response Time ..............................................28
Adjusting Individual Set Points ..................................28
Verifying Set Point Values......................................31
Adjusting Set Point Values .....................................32
iii
Chapter
1
Getting Started
Chapter 1
About your speed switch
WARNING
When the SST-2000A/H Series Speed Switch/Transmitter is
used as the primary overspeed shutdown device, it must be
tested regularly.
The SST-2000A/H series is a speed switch and signal transmitter that provides
alarm set points for over- and underspeed control for sequential, startup, and
shutdown switching for:
t
engines
t
machines
t
I/P drivers
t
instrumentation
t
process control
t
recording
t
measurement
How it works
The SST-2000A/H accepts a full-scale frequency input value from 0–0.1 Hz
(6 pulses per minute) to 0–50,000 Hz. Standard: 0–80 Hz to 0–20,000 Hz.
Examples of input devices include:
The speed switch converts frequency input (speed, rate) into linear proportional
dc outputs:
It provides 0, 2, or 4 relay trip set points (depending on the model)
t
passive or active magnetic pickups
t
shaft encoders
t
contact closures
t
flow meters
t
photocells
t
0–1 mA (standard - meter out)
t
4–20 mA (standard - proportional out)
t
0–5 Vdc (switch selectable)
t
0–10 Vdc (switch selectable)
2
Physical Dimensions
Fig. 1-1 Top and side view
of the SST-2000A/H.
Dimensions in inches and
(centimeters).
Special explosion proof
housings kits (complete
with mounting hardware)
are also available. See XP
rated housings on page 6.
Getting Started
3
Chapter 1
Models
Features
Model
A series – standard relays
SST-2000A 0 CSA: general certification LR 92270
SST-2200A 2
SST-2400A 4
H series – hermetically sealed relays
SST-2000H 0 CSA: Class I, Div. 2, Grp. D, LR 45322*
SST-2200H 2
SST-2400H 4
* Approval contingent upon housing an SST-2000H series device in a CSA-certified
enclosure.
Signal
Sources
No. Of
Set Points
Field-programmable for: sensors, including contact closure input,
magnetic pickups, ac generators, contact closures, photocells.
3rd Party Certification(s)
ABS: type approval
CE: 89/336/EEC, Light Industrial
CE: 72/23/EEC, Low Voltage Directive
CE: 89/336/EEC, Light Industrial
CE: 72/23/EEC, Low Voltage Directive
Input
Frequency
Alarm Set
Points
Alarm
Settings
Alarm
Disable
Alarm Reset t Momentarily reset all latched alarms
Set Point
Verification
Proportional
Outputs
Output
Power
t Full-scale values from 0–0.1 Hz (6 pulses/minute) to 0-20 kHz.
t Field-adjustable range and sensitivity control.
0 SST-2000A/H (when only proportional output is required)
2 SST-2200A/H
4 SST-2400A/H
Alarms are field-configurable for overspeed, underspeed,
energize, de-energize, latch, auto-reset.
Disable all alarms (for startup conditions and special functions)
t Permanently converts all latching alarms to auto-reset
Integral VERIFY permits viewing and setting of set point value
without actuating the relays. Requires an external meter.
0–1 mA and 4–20 mA (standard)
0–5 Vdc or 0–10 Vdc (field-selectable)
Repeater output drives counters and self-powered tachometers.
Regulated 14 Vdc output powers active pickups, accessories, and
meters (e.g. DPM-105; MTH-103D; SPD-100L; LST-100L).
Output
Range
Current source up to 50 mAdc output always included.
4
Specifications
Electrical
Getting Started
Input Signal
Frequency
Range
t 0-20 kHz (standard) (field-adjustable)
t 0-0.1 Hz (special order)
t 0-80 Hz (special order)
t 0-50K Hz (special order)
Waveforms t Accepts pulsed, sinusoidal, square, TTL, or CMOS
Input Signal
Sensitivity
Input
Impedance
t 25 mVrms (typical factory setting)
t 5 mVrms to 100 mVrms (field-adjustable)
t 50 Vrms (maximum for standard units)
t 1.0 volt threshold (requires input signal desensitizing)
t Nearly infinite at low signal levels
t 10 kΩ (min.) at signals exceeding +15.0 V peak, –1.0 V peak
Power Input t 115 Vac ±10%, 47-420 Hz
t 22–30 Vdc, maximum 5 W or 150 mAdc
t 220 Vac, 50/60 Hz (optional)
Proportional
Output
t 0–1 mAdc (standard)
t 4–20 mAdc (standard)
t 0–5 Vdc or 0–10Vdc (field-selectable; for external load
resistance of 20 kΩ or higher)
t Custom ranges available
MAXIMUM LOAD
t 1 kΩ with 115/ 220 Vac or 30 Vdc power
t 750 ohms with 22 Vdc power
t linear between 22 and 30 Vdc
Output Current Independent of load resistance up to the rated load resistance
Span/zero adj. ±5% (minimum) of fuIl-scale
Auxiliary
Meter Output
Proportional 0–1 mAdc, filtered, for meter or recorder loads up
to 750 Ω.
Supply Output Regulated +14 Vdc ±5%; 40 mAdc (maximum load)
Repeater
Square wave 14 V peak-to-peak, zero based, positive going
Output
Output Ripple
0.1% of full-scale maximum over 10% to 100% of full-scale.
and Noise
Response Time 150 milliseconds, 10% to 90% rise (standard). Full-scale
frequency ranges below 80 Hz are proportionally slower.
Linearity 0.1% of full-scale (0.05%, typical), all outputs.
Stability Less than 0.05% of full-scale change with a 10% change in
supply voltage. Temp. coeff. ±0.01% per °F (±0.018% per °C)
5
Chapter 1
Relays
Logic Field-programmable by switches for:
t overspeed/underspeed
t energize/de-energize
t latch/auto-reset
t SPST/DPDT (2 DPDT set points maximum)
A Series
Contact Rating
t 6.0 A @ 28 Vdc or 115 Vac (resistive)
t 2.0 A @ 220 Vac
t 1.0 A into 500 mH for up to 100,000 cycles
t SPDT*
*For DPDT, Relays 1 & 3 and 2 & 4 work together as separate
DPDT trips.
H Series
Contact Rating
t 5 A (resistive) @ 24 Vdc
t 1.0 A @ 120 Vac
t 0.5 A @ 220 Vac
t SPDT*
*For DPDT, Relays 1 & 3 and 2 & 4 work together as separate
DPDT trips.
Alarm Set
t Adjustable, 25-turn cermet potentiometers
Points
Hysteresis t 1% of full-scale frequency
Isolation
Transformer
t Optional. Isolates the transmitter input from the probe or
sensor.
XP Rated Housings (optional)
ENC-6210 XP Cast Housing: 8”H x 10”W x 5” D; 100’s window + P-button
UL/CSA Class I, Groups C,D
Class II, Groups E,F,G
NEMA 3,4
ENC-6311 XP Cast Housing: 8”H x 10”W x 5” D; 100’s window
UL/CSA Class I, Groups B,C, D
Class II, Groups E,F,G
NEMA 3,4
ENC-3000
ENC-4000
Sheet Meta:l 6”H x 9”W x 4” D; NEMA 1; No Window
Sheet Meta:l 8”H x 10”W x 4” D; NEMA 12; No Window
ENC-5000 XP Cast Housing: 7”H x 9”W x 5”D; No Window
UL/CSA Class I, Groups C,D; Class II, Groups E,F,G
6
Getting Started
Options
Enclosures XP and NEMA rated enclosures are available.
Open Pickup Relay 1 switches in the event of an open or disconnected
magnetic pickup. Relay 1 will still react when its set point is
traversed (field-configurable).
NOTE: Not available with signal isolation transformer option.
Pneumatic Trip Pulses relay 1 for 100 milliseconds
Trips Dynalco SPV-200 Solenoid Pneumatic Valve on overspeed
(optional)
Underspeed
Class “C” Logic
Expanded
Scale Input
Environmental
Temperature
Range
Weight 2.6 lbs (1.17 kg)
Arms relay 2 as set point 2 is traversed on increasing speed.
Pulses relay 2 as set point 2 is traversed on decreasing speed.
Use for tripping the pneumatic SPV-200 on underspeed or for
general underspeed electrical shutdown.
Provides full meter output, full proportional output, and full
set point range over a limited input range e.g. 0–1 mA and 4–20
mA over 800–1000 Hz input frequency.
–40°F to +160°F (–40°C to +71°C ) operating
–40°F to + 180°F (–40°C to +82°C) storage
7
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