• load switch for providing electrical isolation during service
• miniature circuit breaker for overcurrent protection
• terminal block for heater and external heater supply connection.
When the drive is running, the heater is switched off. Otherwise, the heater is controlled by
the external supply voltage.
The power and voltage of the heater depend on the motor.
See also:
•
Supplying power for the auxiliary circuits (page 103)
• circuit diagrams delivered with drive for the actual wiring.
￭ Ready/Run/Fault lights (options +G327…G329)
These options provide "ready" (+G327, white), "run" (+G328, green) and "fault" (+G329,
red) lights installed on the cabinet door.
￭ Halogen-free wiring and materials (option +G330)
The option provides halogen-free cable ducts, control wires and wire sleeves, thus reducing
toxic fire gases.
￭ V-meter with selector switch (option +G334)
The option contains a voltmeter and a selector switch on the cabinet door. The switch selects
the two input phases across which the voltage is measured.
￭ A-meter in one phase (option +G335)
The option contains an ammeter that reads the current flowing through one input phase.
￭ Wire markings
Standard wiring
Color
The standard color of the wiring is black, with the following exceptions:
• PE wiring: Yellow/Green, or yellow/green sleeving
• UPS input wiring (option +G307): Orange
• Pt100 sensor wiring with ATEX-certified thermal protection (option +nL514): Light blue.
Markings
As standard, wires and terminals are marked as follows:
• Main circuit terminals: Connector identifier (eg. "U1") marked on terminal, or on insulating
material close to the terminal. Input and output main circuit cables are not marked.
• Plug-in connectors of wire sets (except those that require special tools to disconnect)
are labeled with connector designation (eg. "X1"). The marking is either directly on the
connector, or near the connector on printed sleeving or tape.
• Grounding busbars are marked with stickers.
• Fiber optic cable pairs and data cables have component designation and connector
designations (eg. "A1:V1", "A1:X1") marked with rings or tape.
Operation principle and hardware description 53
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