CONTROLS CONTROLS
IR.T SERIES
CURRENT CONTROL RELAY
UL listed CSA recognized
Automatic or Manual Control
Start-up Inhibit
Adjustable Hysteresis
Multiple Voltages
LED Relay Status Indicator
1. AC Current Control Without Latching:
S1
The output relay is energized when the current (peak current on AC) over-
hysteresis
shoots the level selected on the potentiometer. It de-energizes when the
Automatic
Threshold
current falls below the normal current by 5 to 50% or when input power Unlatching
breaks. The hysteresis is controlled by a top mounted potentiometer and
R
its selection does not change the chosen current level.
5
2. AC Current Control With Latching:
The output relay is energized when the current reaches the selected value
S1
and stays latched. The contact between terminal B1 and B2 (or 11 and 9)
S2
should be opened or input power to the device interrupted to reset. In this
case, it is preferable to reduce the hysteresis 5%.
Manual
Threshold
Unlatching
SPECIFICATIONS:
hysteresis
Input . . . . . . . . . . . . . . . . . . . . . . . . 24 VDC, 24, 48, 110, 220 VAC
R
15%, 50/60 Hz
Power consumption . . . . . . . . . . . 3 VA maximum
WIRING DIAGRAM:
CONTROL RANGE PERMITTED OVERLOAD
DC AC INPUT LESS THAN
CURRENT CURRENT RESISTANCE PERMANENTLY 1 sec Peak
DIR-T LIR-T
5 to 100 mA 3.5 to 70.7 mA 1 ohm 1.5 V 5 A
+
0.05 to 1 A 0.035 to 0.707 A 0.1 ohm 5 A 17 A
(+)5 to 100mA (+)5 to 100mA~
(+)5 to 100mA
S1
S1
~
(+)0.05 to 1A (+)0.05 to 1A(+)0.05 to 1A
0.5 to 10 A 0.35 to 7.07 A 0.01 ohm 15 A 55 A
~
(+)0.5 to 10A (+)0.5 to 10A(+)0.5 to 10A
(-)8v()0V0V
Hysteresis selection . . . . . . . . . . . 5 to 50% of input current
Repeat accuracy . . . . . . . . . . . . . . 2% at a constant ambient
6
5 7
A1 11 E1 E2 E3
Response time . . . . . . . . . . . . . . . . 100 ms On Make
4 8
200 ms On Break 3 9
R
2 10
Output Relay . . . . . . . . . . . . . . . . . SPDT Relay
Memory S2
1 11
A2
12 14 B2 B1 M
Contact material . . . . . . . . . . . . . . AgCdO
Memory (-)8v0V
Maximum loading . . . . . . . . . . . . . 10 A AC resistive 1 A DC inductive
S2
Maximum switching voltage . . . . . 250 VAC or DC
Relay maximum power rating . . . . 2500 VA 30W
4 -
Mechanical life of relay . . . . . . . . . 30 x 10 operations
5
Electrical life of relay . . . . . . . . . . . 2 x 10 at 2500 VA resistive load
Operating temperature . . . . . . . . . +14F to + 140F -10C to +60C
Note: Upon energization of the current control IR.T Series Relay,
Weight . . . . . . . . . . . . . . . . . . . . . . 7 oz. (200g)
the time delay, which is adjustable from .1 to 10 seconds, inhibits
Option: 24 VDC power - the voltage and the measured current must be
the output relay during start-up periods. The delay time is adjustable
from separate sources.
via a potentiometer located on the side of the case. Applies to both
Note: It is recommended that the unit be adequately fused. versions, with and without latching.
ORDERING INFORMATION:
L IR.T 110A
MOUNTING SERIES INPUT POWER
MOUNTING
INPUT POWER
SERIES
D = DIN-rail mounting
24D = 24VDC
IR.T
L = 11 pin plug-in
24A = 24VAC
48A = 48VAC
110A = 110VAC
220A = 220VAC
Products and specifications subject to change without notice.
Consult factory for application assistance.
204 Airline Drive, Suite 300, Coppell, Texas 75019 / Tel: (800) 677-5311 / FAX: (800) 677-3865 / www.crouzet-usa.com
5-21