36
8024252/AE00/V1-0/2020-07| SICK
O P E R A T I N G I N S T R U C T I O N S | ZIRKOR200 Ex-D
Subject to change without notice
5
INSTALLATION
5.10.6
Outputs/functions and relay assignment
All relay contacts are designed for 24 V and 1 A ~, 1 A = (exception: Probe valve).
* The system error relay is also active during the heating phase.
** The relay contact for the probe valve is designed for 230 V and 1 A
≅
.
Fig. 15: Relay board with relays and LEDs marked
Terminal
Relay output
Contact
Function
X5:19A/B
System error*
NC contact
Signals operation-critical errors
X5:18A/B
Maintenance NO
contact
System code was entered, system in
Maintenance mode.
X5:20A/B
Measuring range
NO contact
Closed: Measuring range 1 active
Open: Measuring range 2 active
X5:24A/B
Probe valve**
NO contact
Control of the probe valve
X5:21A/B
Limit value 1
NC contact
Signal an O
2
limit value exceeds 1st
limit value
X5:22A/B
Limit value 2
NC contact
Signal an O
2
limit value exceeds 2nd
limit value
Relay marking
LED marking
Function
A
a
Main probe heating relay
B
b
Maintenance
C
c
System error
D
d
Limit value O
2
1
E
e
Measuring range
F
f
Limit value O
2
2
G
g
Probe valve
H
h
Solenoid valve test gas 1
I
i
Solenoid valve test gas 2
x
Probe heater control
A
I
H
a
A
B
C
E
D
F
G
i
h
b
c
e
d
f
g
x
