Electrical installation
Q3 240-840A
18
O
pt
io
n
4.6
Option
Option - External synchronization
For special applications it might be necessary to tap the synchronization before the power
commutating choke, e.g.
- when operating via field triggering circuit
- in case of an instable power supply
When changing to external synchronization, the 3 resistors
0W (R15, R34, and R40) on the board ‘Q3 - on3’ have to be removed.
Q3-Ein-1
Connection across the terminals X18:35, 36, 37
Observe the phase position!
- L3 across X10:14 (via power choke) and directly across terminal X18:36
- L2 across X10:15 (via power choke) and directly across terminal X18:37
- L1 across X10:16 (via power choke) and directly across terminal X18:35
The wiring has to be short-circuit proof
or protected by means of a line protection
The phase position function has a watchdog
and in case of wrong connections the
LED D7 on the board Q3-on3 will light and
the BTB signal on the controller extinguishes
when the controller is enabled.
LED D7 also lights if there is a breakage of the
installed fuses.
E-Q3-A019-option
Short-circuit
Proof wiring
