85100636 Crouzet USA, 85100636 Datasheet - Page 118
85100636
Manufacturer Part Number
85100636
Description
SAFETY RLY, KZH3-RS 24VAC-VDC
Manufacturer
Crouzet USA
Series
KZH3-RSr
Datasheet
1.84873004.pdf
(328 pages)
Specifications of 85100636
Contact Form
3PST (3 Form A)
Contact Rating (current)
6A
Switching Voltage
440VAC - Max
Relay Type
Safety
Coil Voltage
24VAC/DC
Mounting Type
DIN Rail
Termination Style
Screw Terminal
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Coil Type
-
Coil Current
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Max
Min
Max
Min
Emptying control with low alarm
Emptying control with high alarm
Programming
Un
Al.
R1
R2
Un
Al.
R1
R2
B
C
D
E
F
G
H
T1
T1
1
2
3
Memory
Alarm
Function
Low
Emptying
High
Filling
T3
OFF
1
4
5
T3
1
1
T2
T2
T3
ON
0
6
7
T3
T2
T2
2
2
1
T4
0
On power-up, probes Min, Max and AI. are submerged, relays R1 and R2 are energised and the
pump is ON : emptying starts, the LED for relay R1 is lit. When the Min probe emerges, relay R1
goes off. If, in the event of a fault, the level continues to fall and probe AI. emerges, relay R2 de-
energises and the alarm is triggered : the LED relay R2 is lit.
This fault can be stored.
B
C
T1 : Delay on pick-up
T2 : Response time on immersion
T3 : Response time on emersion
On power-up, probes Min, Max are submerged and probe AI. is above the level of the liquid. Relays
R1 and R2 are energised and the pump is ON : emptying starts, the LED for relay R1 is lit. When
the Min probe emerges, relay R1 de-energises and the pump if OFF : emptying stops, the LED for
relay R1 goes off. If, in the event of a fault, the level continues to rise and reaches proble AI., relay
R2 de-energises and the alarm is triggered : the LED for relay R2 is lit.
This fault can be stored.
B
C
T1 : Delay on pick-up
T2 : Response time on immersion
T3 : Response time on emersion
T4 : Response time on power-down
Operating principle
Control of the level of a conductive liquid at specific points (high and low levels) with an alarm for a
level which is abnormally high or low.
The principle is based on measurement of the apparent resistance of the liquid between
submerged probes. When this value is lower than the present threshold on the unit front face, the
output relay R1 and/or the alarm relay R2 change state.
The avoid electrolytic phenomena, an AC current runs across the probes.
Adjusting sensitivity
Set the sensitivity so that the relay will change state when the probes are in contact with the liquid.
Then check that the relay returns to its initial position as soon as the probes emerge.
In certain applications, fine-tuning the sensitivity prevents inappropriate detection, such as the
presence of foam or bubbles on the surface or the occurrence of leakage impedance between
probes (extended line capacity, humidity, etc).
Note :
Latching of the alarm relay R2 in de-energised state if a fault occurs can the programmed via a
switch on the underside of the underside of the unit (only when the unit is switched off). To reset
alarm relay R2, cut the power, as long as the levels are reset.
Programming
The FN level controller can be programmed using 3 switches on the lower panel :
Note :
Memory, Alarm and Function must only be selected when the unit is switched off.
Memory OFF
Memory ON
Memory OFF
Memory ON
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