Toshiba TS3000 Series Instruction Manual page 60

Cautions 1. While this signal is open, the servo power cannot be
turned on in any mode.
2. ENA*B ~ ENA*C are assumed to have two (2) normal
close contacts interconnected, which should be turned on
and off at the same time. If there is a delay in contact
operation, the non-conformity detecting function of
hardware works to effect an emergency stop.
It is not possible, therefore, to short-circuit the one side
and use the other side as the emergency stop. When
this happens, the system can be restored only by tuning
off and on again the controller power.
For details on the enable switch contact configuration,
see "Emergency stop signal line" on the next page.
3. Unless this signal is used, short-circuit between EMS-3
and EMS-4, and between EMS-5 and EMS-6.
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INTERFACE MANUAL
STE 80729