Electrical Connection; Connecting The Measuring Unit - Endress+Hauser Ceraphant PTC31B IO-Link Operating Instructions Manual

Electrical connection

20
6 Electrical connection
6.1

Connecting the measuring unit

6.1.1 Terminal assignment
WARNING
L
Risk of injury from the uncontrolled activation of processes!
‣
Switch off the supply voltage before connecting the device.
‣
Make sure that downstream processes are not started unintentionally.
WARNING
L
Electrical safety is compromised by an incorrect connection!
‣
In accordance with IEC/EN61010 a separate circuit breaker must be provided for the
device.
‣
The device must be operated with a 630 mA fine-wire fuse (slow-blow).
‣
The maximum current is restricted to Ii = 100 mA by the transmitter power supply unit
when the device is used in an intrinsically safe circuit (Ex ia).
‣
Protective circuits against reverse polarity are integrated.
NOTICE
Damage to analog input of PLC resulting from incorrect connection
‣
Do not connect the active PNP switch output of the device to the 4 to 20 mA input of a
PLC.
Connect the device in the following order:
1. Check that the supply voltage corresponds to the supply voltage indicated on the
nameplate.
2. Connect the device in accordance with the following diagram.
Switch on supply voltage.
1 x PNP switch output R1 (not with IO-Link functionality)
M12 plug
0.63A
L+
1
2
R1
3
4
L–
A0029268
Ceraphant PTC31B, PTP31B, PTP33B IO-Link
Valve plug
0.63A
L+
1
3
4
R1
2
L–
A0023271
Cable
0.63A
1
L+
2a
R1
3
L–
4
2b
(a)
1 brown = L+
2a black = switch output 1
2b white = not in use
3 blue = L-
4 green/yellow = ground
(a) reference air hose
Endress+Hauser
A0022801