Wiring
For the electrical specifications of the STO connection, see the technical data of the control
unit.
■
Activation switch
In the wiring diagrams, the activation switch has the designation [K]. This represents a
component such as a manually operated switch, an emergency stop push button switch, or
the contacts of a safety relay or safety PLC.
• 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.
• An FSO-xx safety functions module or an FPTC-0x thermistor protection module can
also be used. For more information, see the module documentation.
■
Cable types and lengths
• Double-shielded twisted-pair cable is recommended.
• 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 control unit must be at least 17 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.
The Safe torque off function 217
Summary of Contents for ACS880-14
Page 1: ...ABB INDUSTRIAL DRIVES ACS880 14 drive modules 132 400 kW 200 400 hp Hardware manual...
Page 2: ......
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Page 54: ...54...
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Page 98: ...98...
Page 114: ...With twin connectors in the control panel holder 1 2 3 1 114 Electrical installation...
Page 115: ...With FDPI 02 modules OPEN TERMIN ATED 1 1 2 2 OPEN TERMINATED 3 Electrical installation 115 11...
Page 142: ...4 5 6 3 3 1 1 1 1 2 142 Installation example with full cabling panels option H381...
Page 150: ...150 Installation example with full cabling panels option H381...
Page 156: ...156...
Page 204: ...Standard configuration 204 Dimension drawings...
Page 206: ...Drive module with options 0B051 H356 0H371 206 Dimension drawings...
Page 207: ...Configuration with option H381 3AXD50000323210 Dimension drawings 207...
Page 208: ...LCL filter module 208 Dimension drawings...
Page 212: ...External control unit 3AXD50000011687 212 Dimension drawings...
Page 230: ...Declaration of conformity 230 The Safe torque off function...
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