Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - ForGe Control - Manual (Page 110)

110 Rockwell Automation Publication 7000-UM202B-EN-P - June 2014
Chapter 3 Component Definition and Maintenance
The product uses the following fiber optic cable lengths.
There is one duplex fiber optic for each thyristor, which manages gating and
diagnostic functions. The circuitry on the respective driver boards determines the
thyristor’s functional status, and sends this information to the main processor via
a fail-safe light signal in the fiber optic. The main processor initiates the firing
command for the thyristor and transmits the signal to the appropriate gate driver
board via the gating fiber optic.
The color codes of the connectors are:
BLACK or GREY – is the transmitting end of the fiber optic.
BLUE – is the receiving end of the fiber optic.
Air Pressure Sensor An air pressure sensor is located in the converter cabinet. It is located in the upper
left area near the uppermost inverter module.
Figure 98 - Air Pressure Sensor
The air pressure sensor measures the difference in air pressure between the front
and rear of the converter modules. It then sends a small direct current voltage
signal to the control circuits.
Duplex Simplex
5.0 m 5.0 m
5.5 m 6.0 m
6.0 m 10.0 m
6.5 m
7.0 m
Wire terminals
Flexible tube for low
pressure port
High pressure port
Mounting screw