HEIDENHAIN iTNC 530 HSCI - Page 318

318 HEIDENHAIN Technical Manual iTNC 530 HSCI
X17/X18:
EMERGENCY STOP
on MB
Connectors X17 and X18 are electrically parallel.
With the MB 620 without FS, the EMERGENCY STOP must be wired
externally in the EMERGENCY STOP chain as before. In the MB 6xx without
FS, the connectors X17 and X18 do not support dual-channel evaluation of the
EMERGENCY STOP button. These inputs must therefore not be used for
evaluating EMERGENCY STOP!
With the MB 620 FS, the EMERGENCY STOP is evaluated by the control via
HSCI and has HEIDENHAIN standard wiring.
Pin layout X18 on MB 620 FS (X17 without function):
Emergency stop buttons are to be used exclusively for emergency stop
purposes. Under normal operating conditions, a machine must not be
switched off via the emergency stop buttons. The proper functioning of all
emergency stop buttons is to be tested annually by pressing these buttons.
X7: PLC outputs Pin layout:
In the event of an overload or short circuit and as a consequence of excessive
temperature, the individual PLC outputs switch off automatically. Then the
outputs will try to switch on again cyclically.
Connecting
terminals
Assignment
1 Power supply for emergency stop channel A (–TEST.A)
2 Emergency stop channel A
3 Power supply for emergency stop channel B (–TEST.B)
4 Emergency stop channel B
Connecting
terminals
Assignment
1 O0 (illumination for the NC start key)
a
a. With standard wiring
2 O1 (illumination for the NC Stop key)
a
3 O2 (illumination for the Control Voltage ON key)
a
4O3
5O4
6O5
7O6
8O7
9 +24 V NC (available here)
10 0 V NC (available here)