The standard Pt100 relay options include two (+2L506), three (+3L506), five (+5L506)
or eight (+8L506) relays.
By default, the relays are wired internally to digital input DI6 of the drive control unit.
The loss of the input is set to trigger an external fault. The options include a terminal
block for sensor connection. The output indication on the terminal block can be wired
by the customer, for example, to an external monitoring circuit. See the circuit diagrams
delivered with the drive.
Options +3L514 (3 relays), +5L514 (5 relays) and +8L514 (8 relays) are ATEX-certified
thermal protection functions that have the same external connectivity as +nL506. In
addition, each monitoring relay has a 0/4…20 mA output that is available on the
terminal block. Option +nL514 comes with +Q971 (ATEX-certified safe disconnection
function) as standard and is wired at the factory to activate the Safe torque off function
of the drive in an overtemperature situation. As the monitoring relay does not have a
reset functionality, the manual reset required by Ex/ATEX regulations must be
implemented using drive parameters. For more information, see ATEX-certified motor
thermal protection functions for cabinet-built ACS880 drives (options +L513+Q971
and +L514+Q971) user's manual (3AXD50000014979 [English]).
See also
• firmware manual for parameter settings
• ATEX-certified motor thermal protection functions for cabinet-built ACS880 drives
(options +L513+Q971 and +L514+Q971) user's manual (3AXD50000014979 [English])
• Pt100 relay alarm and trip limit setting instructions in the start-up instructions
• circuit diagrams delivered with the drive for the actual wiring.
￭
Starter for auxiliary motor fan (options +M600…M610)
What the option contains
The option provides switched and protected connections for 3-phase auxiliary motor
fans. Each fan connection is equipped with:
• fuses
• a manual motor starter switch with an adjustable current limit
• a contactor controlled by the drive, and
• terminal block X601 for customer connections.
Description
The output for the auxiliary fan is wired from the 3-phase supply voltage to terminal
block X601 through a motor starter switch and a contactor. The contactor is operated
by the drive. The 230 V AC control circuit is wired through a jumper on the terminal
block; the jumper can be replaced by an external control circuit.
The starter switch has an adjustable trip current limit, and can be opened to
permanently switch the fan off.
The statuses of both the starter switch and the fan contactor are wired to the terminal
block.
See the circuit diagrams delivered with the drive for the actual wiring.
Operation principle and hardware description 59
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