DyneSystems DS820F - Modes of Reset Operation

Conguration
MODES OF RESET OPERATION
The PAU has two modes of operation: Reset Required Mode and Automatic Reset Mode.
In the Reset Required Mode, the PAU will require a reset after the application of power or
after a fault condition has occurred. This reset signal is generated by the dynamometer
control system. During a reset condition, a +24 VDC signal is momentarily applied to TB1-6
on the wall mount version, or pin 15 of the 25-pin Dynamometer Control Connector on the
rear of the rack mount version. Reset Required Mode is the default mode of operation when
used in conjunction with an Inter-Loc V controller.
In the Automatic Reset Mode, no reset will be required at power up and the following fault
conditions will self restore: SCR OverTemp, Coolant OverTemp, Low Coolant Pressure/Flow,
Current OverCmd and GP Input Fault X. The Automatic Reset Mode is the default mode of
operation when used in conjunction with a Dyn-Loc IV controller.
Exercise caution when using the PAU in the Automatic Reset Mode, as the PAU
could unexpectedly apply power to the coil resulting in excessive heating and
possible failure if proper cooling is not supplied.
When a customer-supplied control system is used, Dyne Systems will congure the PAU to
the mode of choice. If the customer does not specify the mode of operation at the time of
order, it will be set to the Reset Required Mode.
8 Dyne Systems • DS820F PAU
DPD-001-04B • © Copyright Dyne Systems, Inc.