CONTROLS CONTROLS
Products and specifications subject to change without notice.
Order/Technical Support – Tel: (800) 677-5311 / FAX: (800) 677-3865 / www.crouzet-usa.com
2/93
2
UR SERIES
VOLTAGE CONTROL RELAY
UL listed CSA recognized
•AC or DC Voltage Control
•Manual or Automatic Operation
•Adjustable Threshold
•5 to 50% Hysteresis Range
•LED Relay Status Indicator
SPECIFICATIONS:
Input . . . . . . . . . . . . . . . . . . . . . . . . 24 VDC, 24, 48, 110, 220 VAC
±15%, 50/60 Hz
Power consumption . . . . . . . . . . . 24 VAC: 1 VA
48 VAC: 1.2 VA
110 VAC: 3.5 VA
220 VAC: 7 VA
Control Input Acceptance load (input)
Range Resistance Permanent Less than
AC or DC (max) 10ms peak max.
0.1 to 10 V 10 kΩ50 V 100 V
0.4 to 40 V 40 kΩ100 V 300 V
4 to 400 V 400 kΩ440 V 750 V
Hysteresis selection . . . . . . . . . . . 5 to 50% of set point
Repeat accuracy . . . . . . . . . . . . . . ±2% at a constant ambient
Output Relay . . . . . . . . . . . . . . . . . SPDT Relay
Contact material . . . . . . . . . . . . . . AgCdO
Maximum loading . . . . . . . . . . . . . 10 A AC resistive 8 A DC inductive
Maximum switching voltage . . . . . 250 VAC 250 VDC
Relay maximum power rating . . . . 2200 VA
Transient protection . . . . . . . . . . . 2500 volts 30 W
Mechanical life of relay . . . . . . . . . 30 x 106operations
Electrical life of relay . . . . . . . . . . . 2 x 105at 2400 VA resistive load
Repetition accuracy . . . . . . . . . . . ±0.5% at a constant ambient
Response time . . . . . . . . . . . . . . . . 100 ms on make
200 ms on break
Operating temperature . . . . . . . . . -4°F to +140°F -20°C to +60°C
Weight . . . . . . . . . . . . . . . . . . . . . . 7 oz. (200g)
Option: 24 VDC power – the voltage and the measured current must be
from separate sources.
MOUNTING
D= DIN-rail mounting
L= 11 pin plug-in
SERIES
UR
UR SP50
D
MOUNTING
UR
SERIES
24A
INPUT POWER
INPUT POWER
24A = 24VAC
24D = 24VDC
48A = 48VAC
110A = 110VAC
220A = 220VAC
WIRING DIAGRAM:
ORDERING INFORMATION:
1. AC/DC voltage control without latching:
The output relay is energized when the voltage (AC peak voltage)
exceeds the selected threshold. It de-energizes when the voltage
falls below the hysteresis setting (5 to 50%) or when supply breaks.
The hysteresis is controlled by a potentiometer and its selection does
not change the chosen threshold.
2. AC/DC voltage control with latching:
The output relay is energized when the voltage reaches the selected
threshold and stays latched in this position. The contact between ter-
minal B1 and M (or 8 or 9) should be opened or the input power of
the device interrupted to reset.
1
2
3
4
567
8
9
10
11
S1
LUR
˜
+
˜
-
A1 11
12 14 A2
DUR
B1
E1
S1
R
Latching
S2
E2 E3
M
(-)0v
(+)0.1 to 10v
(+)0.4 to 40v
(+)4 to 400v
(+)0.1 to 10v
(+)0.4 to 40v
(+)4 to 400v
(-)0v
Latching S2
Threshold
hysteresis
hysteresis
S1
R
Threshold
S1
R
S2
Automatic
Unlatching
Manual
Unlatching
CONTROLS CONTROLS
Products and specifications subject to change without notice.
Order/Technical Support – Tel: (800) 677-5311 / FAX: (800) 677-3865 / www.crouzet-usa.com
2/94
SR SERIES
UNDER VOLTAGE RELAY
UL listed CSA recognized
•Multiple AC/DC Voltages
•5 to 20% Hysteresis Adjustment
•Automatic Operation
•Adjustable Threshold
SPECIFICATIONS:
Input . . . . . . . . . . . . . . . . . . . . . . . .12 VDC, 24 VAC, 24 VDC, 48 VAC
48 VDC, 110 VAC, 220 VAC, 50/60 Hz
-20% to +30% DC,
-30% to +15% AC
Maximum power consumption . . .24 VAC: 1.5 VA 24 VDC: .6 W
. . . . . . . . . . . . . . . . . . . . . . . . . . . .48 VAC: 2 VA 24 VDC: .8 W
. . . . . . . . . . . . . . . . . . . . . . . . . . . .110 VAC: 5 VA 48 VDC: 1.8 W
220 VAC: 11 VA
Residual ripple . . . . . . . . . . . . . . .<Hysteresis value
Output relay . . . . . . . . . . . . . . . . . .SPDT Relay
Contact material . . . . . . . . . . . . . .AgCdO
Maximum loading . . . . . . . . . . . . .10 A AC resistive 8 A DC inductive
Maximum switching voltage . . . . .250 VAC 250 VDC
Maximum power rating . . . . . . . . .2200 VA 80 W
Mechanical life of relay . . . . . . . . .30 x 106operations
Electrical life of relay . . . . . . . . . . .2 x 105at 2200 VA resistive load
Operating temperature . . . . . . . . .+14°F to 140°F -10°C to +60°C
Weight . . . . . . . . . . . . . . . . . . . . . .2.8 oz. (100g)
MOUNTING
D= DIN-rail or panel mounting
L= 11 pin plug-in
P= 8 pin plug-in
SERIES
SR
L
MOUNTING
SR
SERIES
24
INPUT POWER
INPUT POWER
12 = 12 VDC
24D = 24 VDC
24A = 24 VAC
48D = 48 VDC
48A = 48 VAC
110 = 110 VAC
220 = 220 VAC
ORDERING INFORMATION:
The voltage threshold SR Relay controls a voltage supply which
is its own supply. The output relay is energized when the supply
(effective for AC) exceeds the selected threshold. It de-energizes
when the controlled supply falls below (5 to 20% Hysteresis) of
the supply voltage or when the input power breaks. Hysteresis
is controlled by a potentiometer and its selection does not
change the chosen threshold. Pulses or drops of 100ms or
less are ignored.
11
12 14
R
1
2
3
4
567
8
9
10
11 1
2
3
45
6
7
8
DSR PSR
LSR
A1
A2
RR
SSS
˜
˜
hysteresis
Threshold
R
0 t
+
–
