ABB ACS880-07, Hardware Manual

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￭ Additional terminal block X504 (L504)
The standard terminal blocks of the drive control unit are wired to the additional terminal
block at the factory for customer control wiring. The terminals are spring loaded.
Cables accepted by the terminals:
• solid wire 0.08 to 4 mm2
• stranded wire with ferrule 0.14 to 2.5 mm2
• stranded wire without ferrule 0.08 to 2.5 mm2 (28 to 12 AWG).
Stripping length: 10 mm.
Note:
The optional modules inserted in the slots of the control unit (or optional FEA-03 extension
adapter) are not wired to the additional terminal block. The customer must connect the
optional module control wires directly to the modules.
￭ Thermal protection with PTC relays (oL505, +2L505, +L513,
+2L513, +L536, +L537)
PTC thermistor relay options are used for overtemperature supervision of motors equipped
with PTC sensors. When the motor temperature rises to the thermistor wake-up level, the
resistance of the sensor increases sharply. The relay detects the change and indicates
motor overtemperature through its contacts.
+L505, +2L505, +L513, +2L513
L505 provides a thermistor relay and a terminal block. The terminal block has
connections for the measuring circuit (one to three PTC sensors in series), the output
indication of the relay, and an optional external reset button. The relay can be reset either
locally or externally, or the reset circuit can be jumpered for automatic reset.
The output indication of the relay can be wired by the customer for example to
• the main contactor or breaker control circuit of the drive, to open it in case of motor
overtemperature,
• the appropriate digital input of the drive, to trip the drive and generate a fault message
in case of motor overtemperature, or
• an external monitoring circuit.
L513 is an ATEX-certified thermal protection function that has the same external
connectivity as +L505. In addition, +L513 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. A manual reset for the protection
function is required by Ex/ATEX regulations. For more information, see
ATEX-certified motor
thermal protection functions for cabinet-built ACS880 drives (oL513+Q971 and
+L514+Q971) user's manual
(3AXD50000014979 [English]).
O2L505 and +2L513 duplicate oL505 and +L513 respectively, containing
the relays and connections for two separate measurement circuits.
Operation principle and hardware description 51