11
3.2. Electrical installation
•
The breakaway torque for the power terminals is 2.3 Nm
(20 lb in). Marking of terminals:
at 921X: +U
G
, -U
G
, R
Br
, L1, L2, L3
at 922X: +U
G
, -U
G
, U, V, W
Supply modules
•
Without additional protective measures (e.g. zeroing) the units
may not be connected to a mains with e.l.c.b. (VDE
0160/05.88). In the event of an earth fault, a DC component in
the fault current can prevent the release of the e.l.c.b.
•
Operate the supply module with assigned mains choke.
•
Power input
Recommended cable diameter and number of cores
Supply module 9212 9215 9217
Number of cores
4
(L1,L2,L3,PE)
4
(L1,L2,L3,PE)
4
(L1,L2,L3,PE)
Cable diameter [mm²]
or
1,5 4 10
AWG
14/15 10/11 6/7
Protect input cables according to their diameter with adapted
cable protection fuses.
•
Protection of the input rectifier:
−
Total protection with external very quick acting fuses in the
mains input (see chapter "Accessories")
−
If total protection is not required:
The normal cable protection fuses or miniature circuit
breakers which are adapted to the cable diameter offer
sufficient protection.
•
The peak power of the supply module must be equal to or
higher than the total peak power of the connected axis modules
and the rated power of the suply module must also be equal to
or higher than the total permanent power of the axis module
(see chap. 3.2.1).
Note
The supply modules 921x hardware version E.4x onwards described in these
Operating Instructions may only be used in combination with the axis modules of
the hardware version E.4x and higher.
Axis modules
•
Connect only one motor to each axis module.
•
The cable diameter of the motor cables must correspond to the
rated current of the motor.
Protection by means of:
−
cable protection fuses or
−
adapted motor protection relay
•
Ensure motor protection:
−
use motor protection relay and monitor the thermostat of the
motor.
•
The connected motor may not be operated when the controller
is enabled, except for safety shutdown.
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