WCL488 Series Water Cooled Electronic Loads
Operation & Programming Manual
TDI-Dynaload Division
Page 24
402828, Rev. B1
programming voltage of 5 volts is required to program the load to 100A. Waveforms can be
programmed with the remote programming input as long as they do not exceed the capability of
the load. The slew rate setting is set at the factory for 100 microseconds for a 0 to selected full
scale transition, but is adjustable from the front panel by the menus, or through the IEEE-488 bus.
Local Control
The local button on the front panel will allow the user to resume front panel control of the load
when operating through the IEEE-488 bus. Pressing this button will enable all the front panel
controls (until any instruction is given by the controlling computer). By pressing the LOCAL
button a second time, the unit will return to IEEE control. This key will not function if password
lockout is enabled. (See section on password protection,
Password Change
, later in this chapter.
NOTE:
A controlling computer program must be stopped before local control will function. The
Dynaload always selects computer control over local control. Any command or query
issued by the computer will clear the local control functions.
Fault Indicators
The Dynaload fault indications include both major and minor faults.
Major faults are an alarm and are displayed in red. If they occur, the Dynaload will shut down,
however, the fan will continue to run.
Minor faults are a warning and are displayed in yellow. If they occur, the Dynaload may continue
to operate, however, it may be out of regulation.
Refer to Table F for additional information about fault indicators.
Table F. Major and Minor Fault Indicators
Fault