Installation and Connection
3
3-20 | UR11
The DIP switch S1:1 is set to OFF and the DIP switch S1:2 is set to ON as factory default.
Follow instructions below for the proper installation of the control wiring:
Wire gauge: 0.5 mm² (20 AWG) to 1.5 mm² (14 AWG).
Maximum tightening torque: 0.5 N.m (4.50 lbf.in).
Use shielded cables for the 24 Vdc power supply connections of the CIR11 board if necessary. The proper
cable shield connection is shown in
.
Isolate with tape
Rectifier side
Do not ground
Converter side
Figure 3.21 -
Cable shield connection
Relays, contactors, solenoids or coils of electromechanical brakes installed close to the inverter may eventually
create interferences in the control circuit. To eliminate this effect, RC suppressors (with AC power supply) or
free-wheel diodes (with DC power supply) must be connected in parallel to the coils of these devices.
3.4.7 Typical Connections
In order the CFW-11M inverter can monitor the rectifier, it is recommended the interconnection between the
fault and/or alarm signals, available at the relays outputs in the CIR11 board, with the DIM1 and DIM2 digital
inputs of the CFW-11M, located at the IPS board of the CFW-11M Control Unit (UC11).
