89750147 Crouzet USA, 89750147 Datasheet - Page 147

• Manufacturer Part Number: 89750147
• Description: STAINLESS SLEEVE-MILL TEMP PRB
• Manufacturer: Crouzet USA

Specifications of 89750147

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

For more information www.crouzet.com
S2
U
0
1
2
3
U
Dimensions
FRL
Principles
Without latching
With latching
1
2
0
3
B
C
D
E
3,5
Hysteresis
Speed displayed
Output relay
Inhibition delay
4
4
23
100
77
5
200 ms min.
5
Operating principle
The FRL control relay can be used to solve underspeed problems : conveyor belts, conveyors, etc
wehere the crossing of a low speed threshold should trigger an alarm.
Speed data is collected via a sensor such as a three-wire output proximity sensor, an NAMUR
sensor or by volt-free contact or voltage.
On power-up, to allow the process which is being controlled to reach its operating speed, control is
inhibited for a time of between 0.3 and 30 sec, which can be adjusted on the front face.
If starting requires an inhibition time above 30 seconds, external contact S2 must be closed during
starting to inhibit the FRL (during this time the yellow LED flashes) , then opened when the nominal
speed has been reached.
On each cycle of the process being controlled, the sensor sends a pulse to the FRL.
Each of these pulses resets the internal time delay of the FRL. If the time between two pulses is
less than the value set on the FRL, the delay is reset on each pulse and the output relay remains
closed.
If the speed of the process decreases, the time between pulses increases.
When the time between two pulses is greater than the value set on the FRL, the controlled process
is in underspeed mode, the output relay of the FRL changes state (opens).
The output relay closes again when the speed of the controlled process exceeds the preset value
plus the hysteresis (5 % of the value displayed).
If "memory" mode is activated, the relay remains open when an underspeed fault is detected. In
this case, the output relay can only close again after a manual reset has been performed by closing
external contact S2.
A yellow LED indicates the state of the relay.
A green LED indicates the presence of the power supply.
B
C
D
E
F
45
Hysteresis
Speed displayed
Output relay
Inhibition delay
Inhibition delay
4,2
FRL
B
C
D
E
A1 - A2 : Supply voltage
11 - 12 - 14 : Output relay (R)
+24 V - E - 0 V : PNP three-wire sensor
E - 0 V : Voltage input
+8 V 2 -Y2 : Contact / NAMUR sensor input
Connection
Voltage
3-wire PNP
Volt-free contact
Namur
~
~
+
_
3
4
+
A1 11
12 14
S1
S2
R
Y1
24V
8V2
+
+
+
+
_
Y2
e
OV
A2
-
_
_
1
2
147
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