Owner's manual

76 Rockwell Automation Publication 23P-UM001D-EN-P - July 2012
Appendix A Specifications
Gate Scaling Module
Information
Gate Scaling Module, Part No. 97331001
The Gate Scaling Module provides a means to interface with Reliance Electric
Power Modules with existing Gate Coupler Modules that are electrically
equivalent to the “O-51378-19” Gate Coupler. The Gate Scaling Module
provides a resistor in each of the SCR gate lines to reduce the voltage applied to
the gate couplers in the power module. The O-51378-19 Gate Coupler (and
equivalent gate couplers) have 0.5 Watt resistors on the primary of the isolation
transformer. The Gate Amplifier provides a higher maximum gate voltage than
the Distributed Power System, Power Module Interface (DPS PMI rack). The
Gate Scaling Module ensures that the power dissipation of the resistors stays
within their maximum ratings.
The configuration using the Gate Scaling Module is covered in detail in the
Retrofit Guidelines section of this manual beginning on page 59
.
Operating Temperatures
• The surrounding air temperature must be within 0 °C to 50 °C (32 °F to
122 °F).
• Humidity must remain between 5% and 95% non-condensing.
• Power dissipation is 1 Watt.
Mounting Instructions
• Mount to a flat, grounded, metal panel.
• Mount in a suitable enclosure in a clean, dry location. Contamination from
oils, corrosive vapors, and abrasive debris must be kept out of the enclosure.
• Mount in a horizontal position only, in order to provide proper cooling.
The lettering on the face of unit should be in a readable position, as shown
in Figure 37 on page 77
.
Note: Grounding of the Gate Scaling Module is accomplished through the
mounting screws. The case is made of a unpainted, cast metal box.