Intelligent Technologies (
IT.
) D77B-DSNAP
20
Pub. No. MN05004001E
September 2002
Table 20: Enhanced Features
DeviceNet Status LED
The combined module status/network status (MS/NS) LED is located on the lower right of the
D77B-DSNAP as pictured in Figure 1: D77B-DSNAP Features.
The following table describes the state of the MS/NS LED.
Table 21: Combined MS/NS LED
Fault
Definition
Ground Fault
With the addition of a Ground Fault module, the D77B-DSNAP will trip when the
module detects a ground fault. The level of the trip is adjusted on the Ground Fault
Module. The Ground Fault Module is connected to the D77B-DSNAP through the
Auxiliary opening on the front of the D77B-DSNAP.
Underload
Warning
While the motor is running, a warning will be activated when the current falls below
a user-settable % of overload’s FLA pot setting.
Current
Threshold -
Warning
While the motor is running, a warning will be activated when the current rises
above a user-settable % of overload’s FLA pot setting.
SCR Over
Temperature
To protect the SCRs from premature damage, a temperature sensor monitors the
SCR temperature. If the monitored temperature is too high, the S751 will trip on
SCR overtemperature.
Contactor
Dropout
The contactor dropped out when it was commanded to be energized.
State
LED
Non-existent
OFF
Standby
Flashing Green
Operational
Not connected: Flashing Green
Operational
Connected: Green
Recoverable Fault
Flashing Red
Unrecoverable Fault
Red
Initializing
Red/Green Flash