•
In case a manually operated activation switch is used, the switch must be of
a type that can be locked out to the open position.
•
The contacts of the switch or relay must open/close within 200 ms of each
other.
■
Cable types and lengths
•
ABB recommends double-shielded twisted-pair cable.
•
Maximum cable lengths:
•
300 m (1000 ft) between activation switch [K] and drive control unit
•
60 m (200 ft) between multiple drives
•
60 m (200 ft) between external power supply and first control unit
Note: A short-circuit in the wiring between the switch and an STO terminal causes
a dangerous fault. Therefore, it is recommended to use a safety relay (including
wiring diagnostics) or a wiring method (shield grounding, channel separation)
which reduces or eliminates the risk caused by the short-circuit.
Note: The voltage at the STO input terminals of the drive must be at least 13 V DC
to be interpreted as “1”.
The pulse tolerance of the input channels is 1 ms.
■
Grounding of protective shields
•
Ground the shield in the cabling between the activation switch and the control
unit at the control unit only.
•
Ground the shield in the cabling between two control units at one control unit
only.
150 The Safe torque off function
Summary of Contents for ACS180
Page 1: ...ABB MACHINERY DRIVES ACS180 drives Hardware manual...
Page 2: ......
Page 4: ......
Page 12: ...12...
Page 36: ...36...
Page 41: ...4 Tighten the mounting screws Mechanical installation 41...
Page 58: ...58...
Page 76: ...76...
Page 90: ...90...
Page 130: ...Frame R0 130 Dimension drawings...
Page 131: ...Frame R1 Dimension drawings 131...
Page 133: ...Frame R3 Dimension drawings 133...
Page 134: ...Frame R4 134 Dimension drawings...
Page 142: ...142...
Page 162: ...Declarations of conformity 162 The Safe torque off function...
Page 163: ...The Safe torque off function 163...
Page 164: ...164 The Safe torque off function...
Page 165: ...The Safe torque off function 165...
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