Rockwell Automation 2090-SRxxx External Shunt Modules Installation Instructions - Manual

Installation Instructions
External Shunt Modules
Catalog Numbers
1394-SR9A, 1394-SR9AF, 1394-SR36A, 1394-SR36AF,
2090-SR120-09, 2090-SR040-09, 2090-SR040-18
About the External Shunt
Modules These externally-mounted passive shunt modules provide a means for
servo drives to dissipate excess regenerative energy from the DC bus.
This is needed when system loads require power dissipation beyond
the capability of the shunt resistor internal to the servo drive. These
are passive shunt resistors and require transistor activation by the
servo drive.
A properly-sized shunt module regulates excessive bus voltage by
passing current through a resistor, which dissipates the current as heat
and minimizes drive faults caused by excess bus voltage.
Shunt Module Compatibility
Topic Page
About the External Shunt Modules 1
Important User Information 2
Catalog Number Explanation 3
Before You Begin 3
Install the External Shunt Module 13
Replace the Shunt Module Fuse 20
External Shunt Module Specifications 21
Additional Resources 22
Shunt Cat. No. Drive Cat. No.
2090-SR120-09 2098-xxx-HV030 and 2098-xxx-HV050
2090-SR040-09 2098-xxx-HV100
2090-SR040-18 2098-xxx-HV100
1394-SR9A
2094-BSP2 (1) and
1394x-SJT22-x
(1) The 2094-BSP2 shunt module is mounted on the Bulletin 2094 power rail and
provides connections to an external shunt module.
1394-SR9AF
1394-SR36A
1394-SR36AF