Current Sensors and Monitors

Current Sensors and Monitors
Series Included
Over or Undercurrent Monitor
ECSW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123
Current Transducer
TCSA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
DCSA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Current Indicator
LCS10T12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
LPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
www.ssac.com • 800-843-8848 • fax: 605-348-5685
Current Sensors & Monitors
Over or Undercurrent
ECS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122
TCS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124
121
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com
Current Sensor
ECS Series
The ECS Series of single-phase AC current sensors
is a universal, overcurrent or undercurrent sensing
control. Its built-in toroidal sensor eliminates the
inconvenience of installing a stand-alone current
transformer. Includes onboard adjustments for
current sensing mode, trip point, and trip delay.
Detects over or undercurrent events like; locked
rotor, loss of load, an open heater or lamp load, or
proves an operation is taking place or has ended.
Features:
For more information see:
Appendix B, page 166, Figure 20 for dimensional drawing.
Appendix C, page 169, Figure 17 for connection diagram.
Auxiliary Products:
Operation
Input voltage must be supplied at all times for proper
operation. When a fault is sensed throughout the trip
delay, the output relay is energized. When the current
returns to the normal run condition or zero, the output and the delay are reset. If a fault is sensed and then
corrected before the trip delay is completed, the relay will not energize and the trip delay is reset to zero.
Adjustment
Select the desired function, over or under current sensing. Set the trip point and trip delay to approximate settings.
Apply power to the ECS and the monitored load. Turn adjustment and watch the LED. LED will light; turn slightly
in opposite direction until LED is off. Adjustment can be done while connected to the control circuitry if the trip
delay is set at maximum. To increase sensitivity, multiple turns may be made through the ECS’s toroidal sensor.
The trip point range is divided by the number of turns through the toroidal sensor to create a new range. When
using an external CT, select a 2VA, 0-5A output CT rated for the current to be monitored. Select ECS adjustment
range 0. Pass one secondary wire lead through the ECS toroid and connect the secondary leads together.
NO = Normally Open Contact
NC = Normally Closed Contact
A = Sensing Delay On Start Up
TD = Trip Delay
• Female q uick connect:
P/N: P1015-13 (AWG 10/12)
P/N: P1015-64 (AWG 14/16)
P/N: P1015-14 (AWG 18/22)
Available Models:
ECSH21F.08C
ECS20BC
ECSH30AC
ECS21BC
ECSH3HF0.08D
ECS21BH
ECSH40AC
ECS2HBC
ECSH40AD
ECS30AC
ECSH41AD
ECS40A
ECSH41BC
ECS40AC
ECSH41F.08D
ECS40BC
ECSH4HF.08D
ECS40BD
ECSH61AD
ECS41A
ECSL31A
ECS41AC
ECSL40AC
ECS41BC
ECSL40B
ECS41BD
ECSL40BH
ECS41BH
ECSL41A
ECS41F.08
ECSL41AD
ECS4HBC
ECSL45F7
ECS4HBH
ECSL4HBH
ECS60AH
ECSL61AH
ECS60BC
ECSL6HAC
ECS61BC
ECS6HAH
If desired part number is not listed, please call us to
see if it is technically possible to build .
TP = Trip Point
R = Reset
OC = Monitored Current
Order Table:
X
Series
• Toroidal through hole wiring
• 0.5 - 50A trip points
• Adjustable or factory fixed trip delays
• Isolated, 10A, SPDT output contacts
• 5% trip point hysteresis (dead band)
Approvals:
─ECS - Selectable over or undercurrent sensing
─ECSH - Overcurrent sensing
─ECSL - Undercurrent sensing
X
Input
─1 - 12VDC
─2 - 24VAC
─3 - 24VDC
─4 - 120VAC
─6 - 230VAC
X
Trip Point
─Fixed - Specify 2-50A i n
1A increments
─0 - 0.5-5A adjustable
─1 - 2-20A adjustable
─H - 5-50A adjustable
X
Trip Delay
─F - Specify: 0.08-50s
factory fixed
─A - 0.150-7s adjustable
─B - 0.5-50s adjustable
X
Sensing Delay on Start Up
─Blank - 0s
─C - 1s
─D - 2s
─E - 3s
─F - 4s
─G - 5s
─H - 6s
Specifications
Sensor
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Toroidal through hole wiring
Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Over or undercurrent, switch selectable
on the unit or factory fixed
Trip Point Range . . . . . . . . . . . . . . . . . . . . . . 0.5 - 50A in 3 adjustable ranges or fixed
Tolerance
Adjustable . . . . . . . Guaranteed range
Fixed . . . . . . . . . . . . 0.5 - 25A: 0.5A or ±5% whichever is
less; 26 - 50A: ±2.5%
Maximum Allowable Current . . . . . . . . . . . Steady – 50A turns; Inrush – 300A turns for 10s
Trip Point Hysteresis . . . . . . . . . . . . . . . . . . . ≅ ±5%
Trip Point vs. Temperature . . . . . . . . . . . . . ±5%
Response Time . . . . . . . . . . . . . . . . . . . . . . . . ≤ 75ms
Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45/500 Hz
Type of Detection . . . . . . . . . . . . . . . . . . . . . . Peak detection
Trip Delay
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Analog
Range
Adjustable . . . . . . . . . . 0.150 - 7s; 0.5 - 50s (guaranteed ranges)
Factory Fixed . . . . . . . 0.08 - 50s (±20ms, whichever is greater)
Delay vs. Temperature . . . . . . . . . . . . . . . . . ±15%
Sensing Delay on Startup . . . . . . . . . . . . . . . Factory fixed 0 - 6s: +40%, -0%
Input
Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 , 120, or 230VAC; 12 or 24VDC
122
Tolerance
12VDC & 24VDC/AC . . . . . . -15 - 20%
120 & 230VAC . . . . . . . . . . . . . -20 - 10%
AC Line Frequency . . . . . . . . . . . . . . . . . . . . 50/60 Hz
Output
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electromechanical relay
Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Isolated, SPDT
Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10A resistive @ 240VAC; 1/4 hp @ 125VAC;
1/2 hp @ 250VAC
Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mechanical – 1 x 106 ; Electrical – 1 x 105
Protection
Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Encapsulated
Isolation Voltage . . . . . . . . . . . . . . . . . . . . . . ≥ 2500V RMS input to output
Insulation Resistance . . . . . . . . . . . . . . . . . . . ≥ 100 MΩ
Mechanical
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . Surface mount with two #6 (M3.5 x 0.6) screws
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5 x 2.5 x 1.75 in. (88.9 x 63.5 x 44.5 mm)
Termination . . . . . . . . . . . . . . . . . . . . . . . . . . 0.25 in. (6.35 mm) male quick connect terminals (5)
Environmental
Operating / Storage Temperature . . . . . . . -40° to 60°C / -40° to 85°C
Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95% relative, non-condensing
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ≅ 6.4 oz (181 g)
www.ssac.com • 800-843-8848 • fax: 605-348-5685
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com
Current Sensors
ECSW Series
The ECSW Series of single-phase, AC window,
current sensors includes adjustable overcurrent
and undercurrent trip points. Detects locked rotor,
jam, loss of load, an open heater or lamp load, a
broken belt, or loss of suction. LED’s aid in trip
point adjustment and provide fault indication. The
built-in toroidal sensor eliminates the need for an
external current transformer. The output can be
electrically latched after a fault, or automatically
reset. Remote resetting of a latched output by
removing input voltage. The unit includes switch
selectable zero current detection and normally
de-energized or energized output operation. Time
delays are included to improve operation and
eliminate nuisance tripping .
For more information see:
Appendix B, page 166, Figure 20 for dimensional drawing.
Appendix C, page 169, Figure 18 for connection diagram.
Features:
• Overcurrent & undercurrent (window
current) sensing
• Adjustable overcurrent & undercurrent trip
points
• Current sensor is included
• Isolated, 10A, SPDT output contacts
• LED indicators
Approvals:
Available Models:
ECSW3LABT
ECSW4HBHT
ECSW4LABT
ECSW4LBHT
ECSW4MBHT
If desired part number is not listed, please call us to
see if it is technically possible to build .
Operation
When the input voltage is applied, sensing delay on startup begins and the output transfers (if normally energized is selected). Upon completion of the startup delay, sensing of the monitored
current begins. As long as current is above undercurrent trip point and below the overcurrent trip point (inside the window), the output relay remains in its normal operating condition and
both red LED’s are OFF. The green LED glows when the output is energized. If current varies outside the window, the associated red LED glows, and the trip delay begins. If the current
remains outside the window for the full trip delay, the relay transfers to fault condition state. If the current returns to normal levels (inside the window) during the trip delay, the red LED
goes OFF, the trip delay is reset, and the output remains in the normal condition.
Reset: Remove input voltage or open latch switch. If zero current detection is selected, the unit will reset as soon as zero current is detected.
Operation With Zero Current Detection Enabled: If the current decreases to zero within the trip delay period, then zero current is viewed as an acceptable current level. The unit’s output
remains in its normal operating state. This allows the monitored load to cycle ON and OFF without nuisance tripping the ECSW. Zero current is defined as current flow of less than 250
milliamp-turns. Note: When zero current detect is selected, the latching operation of switch SW2 is canceled; the output will not latch after a fault trip.
Notes on Operation:
1) There is no hysteresis on the trip points. The overcurrent and undercurrent trip points should be adjusted to provide adequate protection against short cycling.
2) If the upper setpoint is set below the lower setpoint, both red LED’s will glow indicating a setting error.
3) If zero current detection is selected (SW2 ON), and the system is wired to disconnect the monitored load, the system may short cycle. After the unit trips, the load de-energizes, and zero
current is detected. The ECSW resets, and the load energizes again immediately and may be short cycled.
4) The sensing delay on start up only occurs when input voltage is applied. When zero current detection is selected, the trip delay must be longer than the duration of the inrush current or
the unit will trip on the inrush current.
Typical Pump or Fan Protection Circuit Operation
Window Current Sensing: With the ECSW connected as shown in the diagram, a load may be monitored and controlled for over and undercurrent. The ECSW Series’ on board CT (CS) may
be placed on the line or load side of the contactor. The ECSW selection switches are set for zero current sensing (see Selector Switch SW2) and the output selection is normally de-energized
(see Selector Switch SW3). The input voltage (V) is applied to the ECSW continually. As the control switch (FSW) is closed, the input voltage (V) is applied to the motor contactor coil (MCC),
and the motor (M) energizes. As long as the current remains below the overcurrent and above the undercurrent trip points, the ECSW’s output contacts remain de-energized. If the load
current should rise above or fall below a trip point, for the full trip delay, the normally open (NO) contact will close, energizing the control relay (CR) coil. The CR normally closed contact
(CR1) opens and the MCC de-energizes and CR latches on through its normally open contacts (CR2). Reset is accomplished by momentarily opening the normally closed reset switch (RSW).
Note: If the current falls to zero within the trip delay, the ECSW remains de-energized. The sensing delay on startup occurs when input voltage is applied therefore trip delay must be longer
than the duration of the motor’s inrush current. The external latching relay CR2 is required in this system to prevent rapid cycling. A timer can be added to provide an automatic reset.
Selector Switch
ON
Order Table:
ECSW
X
Input
─1 - 12VDC
─2 - 24VAC
─3 - 24VDC
─4 - 120VAC
─6 - 230VAC
X
Trip Point
─L - 0.5-5A adjustable
─M - 2-20A adjustable
─H - 5-50A adjustable
X
Trip Delay
─F - Specify: 0 .1-50s
factory fixed*
─A - 0.150-7s adjustable
─B - 0.5-50s adjustable
*If fixed delay is selected, insert delay
(0 .1-50) in seconds. 0.1-1.9s in 0.1s
increments; 2-50s in 1s increments.
Specifications
X
Sensing Delay on
Start up
─B - 0.1s
─C - 1s
─D - 2s
─E - 3s
─F - 4s
─G - 5s
─H - 6s
Sensor
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Toroid, through hole wiring for up to #4 AWG (21.1 mm2)
THHN wire
Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Over & undercurrent trip points (window current sensing)
Trip Point Range . . . . . . . . . . . . . . . . . . . 0.5 - 50A in 3 adjustable ranges
Tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . Guaranteed range
Maximum Allowable Current . . . . . . . . Steady - 50A turns; Inrush - 300A turns for 10s
Time Point vs Temp. & Voltage . . . . . . . ±5%
Response Time . . . . . . . . . . . . . . . . . . . . . ≤ 75ms
Frequency . . . . . . . . . . . . . . . . . . . . . . . . . 45/500 Hz
Type of Detection . . . . . . . . . . . . . . . . . . . Peak detection
Zero Current Detection . . . . . . . . . . . . . . < 250mA turns typical
Time Delay
Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.15 - 50s in 2 adjustable ranges or 0.1 - 50s fixed
Tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . Adjustable: guaranteed range; Fixed: ±10%
Sensing Delay On Start Up . . . . . . . . . . . Fixed ≅ 0.1 - 6s in 1s increments
Tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . +40% -0%
Delay vs. Temperature & Voltage . . . . . ±15%
Input
Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 24, 120, or 230VAC; 12 or 24VDC
Tolerance 12VDC & 24VDC/AC . . . . -15% - 20%
120 & 230VAC . . . . . . . . . . -20% - 10%
AC Line Frequency . . . . . . . . . . . . . . . . . 50/60 Hz
Output
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electromechanical relay
www.ssac.com • 800-843-8848 • fax: 605-348-5685
X
Connection
─T - Terminal Blocks
Mode: Switch selectable
after a fault
SW1
SW2
SW3
OFF
Not Used
Latched
Zero I
Output - Normally Energized
Mode Selection Switches
SW1 = Latched or Auto reset selector
OFF - Automatic reset after a fault
ON - Output relay latches after a fault trips the unit
SW2 = Zero current detection (below 250 mA)
OFF- Zero current detection disabled
ON- Zero current detection enabled
SW3 = Output during normal operation
OFF- Output relay de-energized
ON - Output relay energized
ON . . . . . . Energized during normal operation, de-energized
OFF . . . . . . De-energized during normal operation, energizes
during a fault
Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Isolated, SPDT
Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10A resistive @ 240VAC; 1/4 hp @ 125VAC;
1/2 hp @ 250VAC
Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mechanical - 1 x 106; Electrical - 1 x 105
Latch
Type . . . . . . . Electrical
Reset . . . . . . . Remove input voltage
Function . . . . Switch selectable latching function
Protection
Surge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IEEE C62.41-1991 Level A
Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . Encapsulated
Isolation Voltage . . . . . . . . . . . . . . . . . . . ≥ 2500V RMS input to output
Insulation Resistance . . . . . . . . . . . . . . . . ≥ 100 MΩ
Mechanical
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . Surface mount with two #6 (M3.5 x 0.6) screws
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . 3.5 x 2.5 x 1.75 in. (88.9 x 63.5 x 44.5 mm)
Termination . . . . . . . . . . . . . . . . . . . . . . . 0.197 in. (5 mm) terminal blocks for up to #12
(3.2 mm2) AWG wire
Environmental
Operating / Storage Temperature . . . . -40° to 60° C/-40° to 85° C
Humidity . . . . . . . . . . . . . . . . . . . . . . . . . 95% relative, non-condensing
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . ≅ 6.4 oz (181 g)
123
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com
Current Sensor
TCS Series
The TCS Series is a low cost method of go/no go
current detection. It includes a solid-state output to
sink or source current when connected directly to
a standard PLC digital input module . Its normally
open or normally closed output can also be used
to control relays, lamps, valves, and small heaters
rated up to 1A steady, 10A inrush. The TCS is selfpowered (no external power required to operate
the unit) and available with an adjustable actuation
range of 2 - 20A or factory fixed actuation points
from 2 - 45A.
For more information see:
Appendix B, page 166, Figure 21 for dimensional drawing.
Appendix C, page 169, Figure 19 for connection diagram.
Features:
• Direct connection to a PLC digital input
module
• 3 to 50VDC, 24 to 240VAC
• 1A steady - 10A inrush
• Actuation Points –
2 - 45A (fixed units)
2 - 20A (adjustable units)
• NO or NC solid-state output
• Complete isolation between sensed current
& control circuit
Approvals:
Auxiliary Products:
Operation
Normally Open: When a current equal to or greater than the actuate current is passed through the toroidal
sensor, the output closes. When the current is reduced to 95% of the actuate current or less, the output opens.
Normally Closed: When the current through the toroid is equal to or greater than the actuate current, the output
opens. When the current is reduced below 95% of the actuate current, the output closes. To increase sensitivity,
multiple turns may be made through the TCS’s toroidal sensor. The trip point range is divided by the number of
turns through the toroidal sensor to create a new range. When using an external CT, select a 2VA, 0-20A output
CT rated for the current to be monitored. Select TCS adjustment range 0. Pass one secondary wire lead through
the TCS’ toroid and connect the secondary leads together.
• Female q uick connect:
P/N: P1015-64 (AWG 14/16)
• Quick connect to screw adaptor:
P/N: P1015-18
• Mounting bracket: P/N: P1023-6
• DIN rail: P/N: C103PM (Al)
• DIN rail adaptor: P/N: P1023-20
Available Models:
TCSG2A
TCSGAA
TCSGAB
TCSH2A
TCSH2B
If desired part number is not listed, please call us to
see if it is technically possible to build .
L = Load
V = Voltage
PS = Power Supply
PLC = PLC Digital Input Module
R = Reset
TP = Trip Point
OC = Monitored Current
NO = Normally Open Output
NC = Normally Closed Output
Order Table:
TCS
X
Output Voltage
─G - 3-50VDC
─H - 24-240VAC
TCSH3A
TCSH4A
TCSHAA
TCSHAB
X
Actuate Current
─A - 2-20A adjustable
─Fixed - Specify from
2-45A in 1A increments
X
Output Form
─A - Normally Open
─B - Normally Closed
Specifications
Sensor
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Toroid, through hole wiring, alternating current,
monitored wire must be properly insulated
Current to Actuate . . . . . . . . . . . . . . . . . . . . . . . . . Adjustable: - 2 - 20A, guaranteed range
Fixed: - 2 - 45A, +0/-20%
Reset Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ≅ 95% of the actuate current
Maximum Allowable Current . . . . . . . . . . . . . . . Steady - 50A turns
Inrush - 300A turns for 10s
Actuate Current vs. Temp. & Voltage . . . . . . . . ≤ ±5%
Response Times . . . . . . . . . . . . . . . . . . . . . . . . . . . Overcurrent - ≤ 200ms
Undercurrent - ≤ 1s
Burden . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . < 0.5VA
Output
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Solid state
Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NO or NC
Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1A steady, 10A inrush
Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AC - 24 to 240VAC +10/-20%
DC - 3 to 50VDC
Voltage Drop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AC NO & NC - ≅ 2.5V
DC NO & NC - ≅ 1.2V
124
Protection
Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Encapsulated
Dielectric Breakdown . . . . . . . . . . . . . . . . . . . . . . ≥ 2000V RMS terminals to mounting surface
Insulation Resistance . . . . . . . . . . . . . . . . . . . . . . . ≥ 100 MΩ
Mechanical
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Surface mount with one #10 (M5 x 0.8)
screw
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 x 2 x 1.75 in. (50.8 x 50.8 x 44.5 mm)
Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.25 in. (6.35 mm) male quick connect
terminals (2)
Sensor Hole . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.36 in. (9.14 mm) for up to #4 AWG
2
(21 .1 mm ) THHN wire
Environmental
Operating / Storage Temperature . . . . . . . . . . . -20° to 60°C / -40° to 85°C
Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95% relative, non-condensing
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ≅ 2.6 oz (74 g)
www.ssac.com • 800-843-8848 • fax: 605-348-5685
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com
Current Transducers
TCSA Series
The TCSA Series is a loop-powered, linear output
current transducer that provides an output that
is directly proportional to the RMS AC current
passing through the onboard toroid. The TCSA
provides a 4 - 20mA output over a power supply
range of 10 - 30VDC. Each unit is factory calibrated
for monitoring in one of four ranges; 0-5, 0-10,
0-20, or 0-50A. The 0 - 5A range allows the use
of external current transformers so loads up to
1200AC amps can be monitored.
For more information see:
Appendix B, page 166, Figure 21 for dimensional drawing.
Appendix C, page 169, Figure 20 for connection diagram.
Operation
The TCSA varies the effective resistance of its output in direct proportion to the current flowing in the monitored
conductor. The unit is factory calibrated so that 0 amps provides a 4mA output and full span provides a 20mA
output. Zero and span adjustments are provided for minor calibration adjustments in the field (if required).
Using an External Current Transformer (CT)
Select a 2VA, 0 to 5A output CT, rated for the current to be monitored. Select TCSA5. Pass one of the CT’s secondary
wire leads through the TCSA’s toroid. Connect the CT’s secondary leads together.
20
18
Features:
• Monitors 0 - 50A in 4 ranges
• Loop powered from 10 to 30VDC
• Linear output from 4 - 20mA
• Zero & span adjustments
• Complete isolation between sensed current
& control circuit
Approvals:
Auxilary Products:
•Female quick connect:
P/N: P1015-64 (AWG 14/16)
•Quick connect to screw adaptor:
P/N: P1015-18
•Mounting bracket: P/N: P1023-6
•DIN rail: P/N: C103PM
•DIN rail adaptor: P/N: P1023-20
Available Models:
TCSA5
TCSA10
TCSA20
TCSA50
16
14
12
10
8
6
4
0
1
2
4
10
2
4
8
20
3
6
12
30
4
8
16
40
5
10
20
50
Order Table:
Current Range
0-5A
0-10A
0-20A
0-50A
Part Number
TCSA5
TCSA10
TCSA20
TCSA50
Specifications
Sensor
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Toroid, through hole wiring, alternating current,
monitored conductor must be properly insulated
Monitored AC Current . . . . . . . . . . . . . . . . . . 0 - 50A
Ranges
4 factory calibrated ranges . . . . 0 - 5A, 0 - 10A, 0 - 20A, or 0 - 50A
Factory calibration . . . . . . . . . . . ≤±2% of full scale
Maximum Allowable Current . . . . . . . . . . . . Steady – 50A turns; Inrush – 300A turns for 10s
Repeat Accuracy . . . . . . . . . . . . . . . . . . . . . . . ≤±0.25% of full scale under fixed conditions
Response Time . . . . . . . . . . . . . . . . . . . . . . . . . ≅ 300ms
Burden . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ≤ 0.5VA
AC Line Frequency 0 - 20A / 21 - 50A . . . 20 - 100Hz / 30 - 100Hz
Temperature Coefficient . . . . . . . . . . . . . . . . . ±0.05%/°C
Output
Type: Series Connection . . . . . . . . . . . . . . . . Current directly proportional to monitored current
Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 20mA
Sensor Supply Voltage* . . . . . . . . . . . . . . . . . 10 to 30VDC
Momentary Voltage . . . . . . . . . . . . . . . . . . . . . 40VDC for 1m
Zero Adjust . . . . . . . . . . . . . . . . . . . . . . . . . . . . ≅ 3.75 - 4.25mA
Span Adjust . . . . . . . . . . . . . . . . . . . . . . . . . . . 18mA - 22mA
Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mini-screw, 25-turn potentiometer
Protection
Dielectric Breakdown . . . . . . . . . . . . . . . . . . . ≥ 2000V RMS terminals to mounting
surface
Insulation Resistance . . . . . . . . . . . . . . . . . . . . ≥ 100 MΩ
Polarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Units are reverse polarity protected
Mechanical
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Surface mount with one #10 (M5 x 0.8)
screw
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 x 2 x 1.75 in. (50.8 x 50.8 x 44.5 mm)
Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.25 in. (6.35 mm) male quick connect
terminals
Sensor Hole . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.36 in. (9.14 mm) for up to #4 AWG
(21 .1 mm2) THHN wire
Environmental
Operating / Storage Temperature . . . . . . . . -30° to 60°C/-40° to 85°C
Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95% relative, non-condensing
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ≅ 2.4 oz (68 g)
*Minimum loop-power supply voltage equals the minimum sensor voltage 10VDC
plus the voltage drop developed across all the other loop devices at 20mA.
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125
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com
Current Transducers
DCSA Series
The DCSA Series is a loop-powered, linear output
current transducer that provides an output that
is directly proportional to the RMS AC current
passing through the LCSC10T12 sensor. The DCSA
provides either an analog current or voltage: 4 - 20
mA, 1 to 5VDC, or 2 to 10VDC. Each unit is factory
calibrated for monitoring (with the LCSC10T12
connected) in one of four ranges; 0 - 5, 0 - 10, 0 - 20,
or 0 - 50A. Zero and span adjustments allow field
calibration if needed. The DCSA mounts on both
DIN 1 and DIN 3 rails.
For more information see:
Appendix B, page 166, Figure 22 for dimensional drawing.
Appendix C, page 169, Figure 21 for connection diagram.
Operation
The DCSA varies the effective resistance of its output in direct proportion to the current flowing in the conductor
monitored by the LCSC10T12. Connecting the power supply to terminals C & D provides a 4 to 20mA DC current.
Connect the power supply to terminals C & A to get 1 to 5VDC at terminal D. Connect the power supply to
terminals C & B to get 2 to 10VDC at terminal D.
Features:
• Mounts on DIN 1 or DIN 3 rail
• 0 - 50A in 4 ranges using LCSC10T12 sensor
• Loop powered from 10 to 30VDC
• Linear output from 4 - 20mA, 1 - 10VD
• Zero & span adjustments
• Separate sensor & control unit
Approvals:
Auxiliary Products:
• Current sensor:
P/N: LCSC10T12
Available Models:
DCSA50
LCSC10T12
If desired part number is not listed, please call us to
see if it is technically possible to build .
Monitored
Current
Amps
50, 20, 10, 5
25, 10, 5, 2.5
A
0
mA 4
VDC 2
Output 1
12
6
3
20
10
5
Order Table:
Current Range
with LCSC10T12
0-5A
0-10A
0-20A
0-50A
DCSA Input Range
(F to E)
Part
Number
Toroidal Current Sensor
LCSC10T12
0-5mA AC
0-10mA AC
0-20mA AC
0-50mA AC
DCSA5
DCSA10
DCSA20
DCSA50
Specifications
Input
Ranges (without LCSC10T12 connected)
4 factory calibrated ranges in mA AC . . . . . . . . . .
Factory calibration . . . . . . . . . .
Repeat Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . .
Response Time . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Temperature Coefficient . . . . . . . . . . . . . . . . . . . .
Input To Output . . . . . . . . . . . . . . . . . . . . . . . . . .
Output
Type
Analog . . . . . . . . . . . . . . . . . . . .
Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply Voltage* . . . . . . . . . . . . . . . . . . . . . . . . . . .
Momentary Voltage . . . . . . . . . . . . . . . . . . . . . . . .
Zero Adjust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Span Adjust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Protection
Dielectric Breakdown . . . . . . . . . . . . . . . . . . . . . .
Insulation Resistance . . . . . . . . . . . . . . . . . . . . . . .
Polarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
126
0 - 5mA, 0 - 10mA, 0 - 20mA, or 0 - 50mA AC
±0.5% of full scale
±0.25% of full scale under fixed conditions
≅ 300ms
±0.05%/°C
Not isolated
Current directly proportional to input current
4 - 20mA, or 1 to 5VDC or 2 to 10VDC
10 to 30VDC
40VDC for 1m
≅ 3.75 - 4.25mA
18mA - 22mA
Mini-screw, multi-turn potentiometer
≥ 2500V RMS terminals to mounting surface
≥ 100 MΩ
Units are reverse polarity protected
Mechanical
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Termination
Wire clamp . . . . . . .
Environmental
Operating / Storage Temperature . . . . . . . . . . .
Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIN 1 & DIN 3 rail mounting
For 22 - 14AWG (.336 mm2 ... 2.5 mm2)
-30° to 60°C / -40° to 85°C
95% relative, non-condensing
≅ 1.6 oz (45.4 g)
Accessory - LCSC10T12 Toroidal Sensor
Number of Turns . . . . . . . . . . . . . . . . . . . . . . . . . . 1000
Nominal Output Current Full Range . . . . . . . . . 0 - 50 mA
Maximum Allowable Current . . . . . . . . . . . . . . . Steady 50A turns
Inrush 300A turns for 10s
Burden . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ≤ 0.5 VA
Frequency
0 - 20A / 21 - 50A . . . . . . . . . . 20/100 Hz / 30/100 Hz
Sensor Hole . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.36 in. (9.14 mm) for up to #4 AWG
(21 .1 mm2) THHN wire
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ≅ 1 oz (28.3 g)
*Minimum loop-power supply voltage equals the minimum sensor voltage 10VDC plus
the voltage drop developed across all the other loop devices at 20mA.
www.ssac.com • 800-843-8848 • fax: 605-348-5685
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com
Current Indicators
LCS10T12 / LPM
The LCS10T12 connected to the LPM12 or LPMG12
indicator is a low cost, easy to use, go/no-go
indication system for the remote monitoring of
current flow. The LCS10T12 is installed on an
adequately insulated wire of the monitored load.
Its 12in. (30.4cm) leads are connected to the LPM12
or LPMG12 panel mount indicator directly or via
customer supplied wires up to 500 feet (152.4m)
long .
For more information see:
Appendix B, pages 166 & 167, Figures 23 & 24 for
dimensional drawings .
Appendix C, page 170, Figure 22 for connection diagram.
Features:
• Low cost go/no go indication
• May be connected to wires up to 500 feet
(152.4 m) long
• Remote monitoring of currents up to 50A
• Green or red LED indicator available
Approvals:
Available Models:
LCS10T12
LPM12
LPMG12
Operation
When the monitored current is 5A turns, the panel mount LPM indicator will glow. The LCS10T12 is designed
to maximize the light output of the panel mount indicator. It can be used to monitor current flow of less than
5A by passing the monitored conductor 2 or more times through the sensor.
CAUTION: The LCS10T12 must be connected to the LPM12 or LPMG12 before current flows to prevent damage
or a shock hazard. Monitored wires must be properly insulated.
Panel mount indicator designed to match the output of the LCS10T12. The LPM12 and LPMG12 come with 12 in.
(30.4 cm) wires and a one piece mounting clip. Both devices install quickly in a 0.25 in. (6.35 mm) hole in panels
from 0.031 - 0.062 in. (0.79 - 1.6 mm) thick.
Order Table:
Description
AC Current Sensor
Red LED Indicator
Green LED Indicator
Part Number
LCS10T12
LPM12
LPMG12
Specifications
Monitored Current
Current Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 50A AC
Wire Passes
Min. Current
Max Current Max. Inrush Max. Wire Dia.
1
5A
50A
120A
0.355 in. (9.0 mm)
2
2.5A
25A
60A
0.187 in. (4.7 mm)
3
1.7A
16.6A
40A
0.15 in. (3.8 mm)
4
1.3A
12.5A
30A
0.125 in. (3.2 mm)
5
5/X
50/X
120/X
Maximum Current . . . . . . . . . . . . . . . . . . . . . . . . . 50A turns continuous
AC Line Frequency . . . . . . . . . . . . . . . . . . . . . . . . 50/60Hz
DC Resistance of Current Limiter . . . . . . . . . . . . 65 Ω
Mechanical
Sensor Hole . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.36 in. (9.14 mm) for up to #4 AWG
(21 .1 mm2) THHN wire
Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 in. (30.4 cm) wire leads
Environmental
Operating / Storage Temperature . . . . . . . . . . . -40° to 60°C/-40° to 85°C
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LCS: ≅ 0.8 oz (23 g)
LPM: ≅ 0.2 oz (6 g)
www.ssac.com • 800-843-8848 • fax: 605-348-5685
127
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com
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