76 Rockwell Automation Publication 8720MC-RM001K-EN-P - September 2018
Chapter 6 8720MC-RPS Startup and Operation
Interpret Status Indicators
The operation panel contains six status indicators as defined in the following
table.
Table 25 - Status Indicator Legend
Operation Modes
The operation panel operates in the two modes:
• In Monitor mode, you can monitor various operating conditions
including input current of the 8720MC-RPS unit and DC-bus voltage,
for example.
• In Program mode, you can view and change parameter values, and
examine the error log.
Monitor Mode
To select a value to monitor, press or until the desired value is displayed.
Pressing
or increments you through the each of the displays.
In Monitor mode, the PROGRAM status indicator is OFF, indicating that the
operation panel is not in Program mode. When any fault occurs, the operation
panel cannot be changed to Monitor mode.
Status Indicators Description
READY
ON PWM switching is being performed.
OFF PWM switching is not being performed.
FAULT
ON Fault occurred or the error log is being displayed.
OFF Normal operation
PROGRAM
ON The operation panel is in Program mode.
OFF The operation panel is in Monitor mode.
A ON The rms value (in Amps) of the monitored input current is displayed.
VON
• AC input voltage (rms) value is displayed
• DC-bus voltage value is displayed
kW
ON Monitored power-running (kW) value is displayed.
Flashing Monitored power (regenerated) (kW) value is displayed
A, V, kW OFF
The load ratio
(1)
is a ratio of the input current to the rated current. Load ratio (in %) is
displayed when A, V, and kW are all OFF in Monitor mode.
(1) The displayed value of input current is only an approximate value and no accuracy can be guaranteed. If you need an accurate
value, measure it by using a dedicated measuring device.
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