February 2012 28 – 503
X30:
Handwheel
connection,
permissive button /
EMERGENCY STOP
Only for machine operating panels with FS (functional safety).
Not for use with MB 620 without FS!
With the MB 620 without FS, the EMERGENCY STOP and the permissive keys must be wired
externally in the EMERGENCY STOP chain and in the safety circuits!
X31:
NC Start / NC Stop
NC Start and NC Stop are normally-open contacts on the MB 620.
X101:
Power supply
X500, X502:
HSCI interfaces
Assignment --> See ”X500, X502: HSCI interfaces” on page 28 – 472.
The connector for the handwheel on the machine operating panel, as well as the connector on
the handwheel itself, may be removed only by trained and qualified personnel, even if it can be
removed without using a tool.
If the handwheel connector is removed, only basic insulation from line power (230 V) is provided!
Connecting terminals Assignment
1 Reserved (do not assign)
2 Reserved (do not assign)
3 Reserved (do not assign)
4 Reserved (do not assign)
5 NC Start
a
a. With standard wiring
6 Reserved (do not assign)
7 NC Start power supply (+24 V NC)
a
8NCStop
a
9 Reserved (do not assign)
10 NC Stop power supply (+24 V NC)
a
Please note that the MB 620 is powered by +24 V NC.
For the entire HSCI system, the +24 V NC supply voltage is required to be safely separated
voltage. The +24 V NC supply voltage must not, under any circumstances, be connected with
the +24 V PLC supply voltage, because this removes the double basic insulation.
Connecting terminals Assignment
1+24V-NC
20V-NC
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