Electrical Installation
3
3.9 External Interlock
YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference 111
This function allows a contact closure from a BAS, between terminals TB2-4 and TB2-10, to transfer motor operation
from Drive Mode to Bypass Mode. An open contact allows operation in Drive Mode and a closed contact allows
operation in Bypass Mode.
◆ Emergency Override
Terminal TB2-5 is a programmable input with a default setting of “Emergency Override” operation. Use Z2-05 to
change the function of this terminal.
This function allows a contact closure between terminals TB2-5 and TB2-10 to transfer motor operation to bypass for
emergency override operation. The motor overload and Safety Interlock circuit are overridden during emergency
override or in emergency fire/smoke situations to place priority on personnel protection.
Note:
Emergency Override overrides all control inputs and bypass selector buttons. You must open the contact closure at terminal TB2-5 or open
the disconnect switch to terminate Emergency Override operation.
◆ Spare Multi-Function Digital Inputs
Terminals TB2-6, TB2-7, and TB2-8 are spare programmable inputs. The Bypass +24 V logic circuit is
interconnected with the drive multi-function digital inputs to allow a single customer interface to control both drive
and bypass circuits. The function of these terminals can be set using Z2-06 and Z2-07.
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