Syrelec, Brand of Crouzet Control IR.T SERIES Catalog Page

CONTROLS CONTROLS

Products and specifications subject to change without notice.

Order/Technical Support – Tel: [phone] / FAX: [phone] / www.crouzet-usa.com

2/88

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

SPECIFICATIONS:

Input . . . . . . . . . . . . . . . . . . . . . . . . 24 VDC, 24, 48, 110, 220 VAC

±15%, 50/60 Hz

Power consumption . . . . . . . . . . . 3 VA maximum

CONTROL RANGE PERMITTED OVERLOAD

DC AC INPUT LESS THAN

CURRENT CURRENT RESISTANCE PERMANENTLY 1 sec Peak

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

0.5 to 10 A 0.35 to 7.07 A 0.01 ohm 15 A 55 A

Hysteresis selection . . . . . . . . . . . 5 to 50% of input current

Repeat accuracy . . . . . . . . . . . . . . ±2% at a constant ambient

Response time . . . . . . . . . . . . . . . . 100 ms On Make

200 ms On Break

Output Relay . . . . . . . . . . . . . . . . . SPDT Relay

Contact material . . . . . . . . . . . . . . AgCdO

Maximum loading . . . . . . . . . . . . . 10 A AC resistive 1 A DC inductive

Maximum switching voltage . . . . . 250 VAC or DC

Relay maximum power rating . . . . 2500 VA 30W

Mechanical life of relay . . . . . . . . . 30 x 104operations

Electrical life of relay . . . . . . . . . . . 2 x 105at 2500 VA resistive load

Operating temperature . . . . . . . . . +14°F to + 140°F -10°C to +60°C

Weight . . . . . . . . . . . . . . . . . . . . . . 7 oz. (200g)

Option: 24 VDC power - the voltage and the measured current must be

from separate sources.

Note: It is recommended that the unit be adequately fused.

MOUNTING

D = DIN-rail mounting
L = 11 pin plug-in

SERIES

IR.T

L

MOUNTING

IR.T

SERIES

110A

INPUT POWER

INPUT POWER

24D = 24VDC
24A = 24VAC

48A = 48VAC
110A = 110VAC
220A = 220VAC

WIRING DIAGRAM:

ORDERING INFORMATION:

1. AC Current Control Without Latching:
The output relay is energized when the current (peak current on AC) over­shoots the level selected on the potentiometer. It de-energizes when the
current falls below the normal current by 5 to 50% or when input power
breaks. The hysteresis is controlled by a top mounted potentiometer and
its selection does not change the chosen current level.

2. AC Current Control With Latching:
The output relay is energized when the current reaches the selected value
and stays latched. The contact between terminal B1 and B2 (or 11 and 9)
should be opened or input power to the device interrupted to reset. In this
case, it is preferable to reduce the hysteresis 5%.

Note: Upon energization of the current control IR.T Series Relay,
the time delay, which is adjustable from .1 to 10 seconds, inhibits
the output relay during start-up periods. The delay time is adjustable
via a potentiometer located on the side of the case. Applies to both
versions, with and without latching.

0V

0V

(+)5 to 100mA

~

(+)0.05 to 1A

~

(+)0.5 to 10A

~

(–)0V

–
–
–