190 HEIDENHAIN Technical Manual MANUALplus 620
PSL 135 pin layout Connector Function
X31 Input voltages L1, L2 and connection of the
DC link voltage Uz
B – Signal
ground
(= functional
ground)
Signal ground (0 V signal of the +24 V NC sig-
nal connected internally to protective ground)
X74 Output for supply voltages:
Terminal 1: +5 V
Terminal 2: 0 V
X69 Power supply and control signals for CC 61xx
(for X69 on CC)
X90 Output for supply voltages:
Terminal 1: +24 V NC
Terminal 2: 0 V NC
(ground +24 V NC)
Terminal 3: + 24 V– PLC
Terminal 4: 0 V PLC
(ground +24 V– PLC)
Protective ground
Do not engage or disengage any connecting elements while the unit is
under power!
X31
X74
X69
X90
L1/L2
+U
DC
/ U
DC
+5V
0V
24V
0V
0V
24V
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