NORD Drivesystems BU0700 - Manual (Page 42)

NORDAC SK 700E Operating Manual
42 Subject to technical alterations BU 0700 GB-1411
Motor temperature protection - applies to all customer units! -
For secure protection against motor overheating, a temperature sensor (PTC
thermistor (PTC, PTC) can be connected to any digital input (excluding multi-I/O).
The appropriate parameters (P420 ... P423 or P425, depending on option) must be
set to a value of 13 (PTC thermistor input) for this purpose.
NOTE: With multi I/O only digital input 6 (P425) is possible!
The supply voltage varies dependent upon the customer unit. The lowest voltage
possible should be chosen.
Internal switching in the inverter prevents excessive PTC voltage.
The cable routing should always be separate from the motor cable and with
shielded cables.
Installation of the customer unit:
WARNING / NOTE
Installation must be carried out by qualified personnel only, paying particular attention to safety and warning
instructions.
Customer units must not be inserted/removed when live.
1. Switch off the mains voltage, observe the waiting period.
2. Remove the cover grid from the connection area by loosening the 2 screws and
levering out the device cover (slot, see Fig.) or simply pull it out.
3. Move the locking lever to the "open" position.
4. Using light pressure, push the customer unit into the upper guide rail until it
engages and lies flush with the plastic frame.
5. Move the locking lever to the "closed" position.
6. Remove the connector by pressing the releases then make the necessary
connections. Then insert the connectors until they engage.
7. Replace all covers.
CLOSED
OPEN
Locking device closed
Locking device open
Customer unit
Locking pin
Technology unit
Special extension unit
Motor
PTC
Supply voltage +5V
Digital input