23
8015675/1EEU/2021-12| SICK
O P E R A TI N G I N S T R UC TI O N S | Flow-X
Subject to change without notice
INSTALLATION
4
4.3.5
Power supply plug
The Flow-X flow computers have redundant power supply connections that can be
connected to two independent power supplies. However, a redundant power supply is not
required for operation of the Flow-X flow computer. The Flow-X flow computer switches
automatically to the other power supply without power failure when the power supply used
fails. The Flow-X flow computers use an 8-pin terminal block to connect one or two external
power supplies. The primary connection must always be used, the secondary connection is
optional.
The primary power supply must be connected to one (the) terminal(s) “24 V DC - Primary”
and one of the “0 - V DC” terminal(s). The optional secondary power supply must be
connected to one (the) terminal(s) “24 V DC - Secondary” and one of the “0 - V DC”
terminal(s).
Fig. 16: Flow-X power terminal block Flow-X/P (left) and Flow-X/S or Flow-X/C (right)
WARNING:
The device may only then be connected to the power supply when ALL of the other
desired lines and plugs are connected to the device.
A plug or cable may only be disconnected from the device when the voltage supply to
the device has been disconnected beforehand.
Connecting plugs or cables while the device is in operation can cause irreparable
damage to the electronics. Corresponding defects are excluded from a warranty claim.
+
+
+
+
+
+
5
8
6
7
4 3 2 1
5 2
6
1
Pin
Description
Indication on Flow-X
1
24 V - primary
+1
2
24 V - primary
+1
3
24 V - secondary
+2
4
24 V - secondary
+2
5
0 V
6
0 V
7
0 V
8
0 V
Table 5: Flow-X power terminal block
