Relay Contact Outputs - ABB ACH580 Series User Manual

ACH580 E-Clipse bypass and packaged drive user manual

Relay contact outputs

System Ready (1) [SYS READY]
If configured for System Ready, the relay is energized when the Drive/Bypass
System is ready to be started. Two conditions must be met in order for the System
Ready relay to energize.
• The Safety Interlock input contact(s) must be closed and
• There can be no fault present in the selected mode (Drive or Bypass) of the
system.
System Running (2) [SYS RUNNING]
If configured for System Running, the relay is energized when the Drive/Bypass
system is running. The System Running relay provides an output when the motor is
running whether powered by the drive or the bypass.
System Started (3) [SYS STARTED]
If configured for System Started, the relay is energized when the Drive/Bypass
system is started. Three conditions must be met in order for the relay to energize.
• A Start command must be present,
• The Safety Interlock input contact(s) must be closed and
• There can be no fault present in the system. The Start command can come from
the bypass control board terminal block, the drive control panel, the bypass
control panel, or communications, depending on the operational mode selected.
The System Started relay is ideal for use in damper actuator circuits, opening the
dampers only under those conditions where the system is preparing to run the motor.
Closing the dampers if the safeties open, the system faults, or when a Stop
command is issued.
Bypass Selected (4) [BYPASS MODE]
If configured for Bypass Selected, the relay is energized when Bypass Mode has
been selected as the method of motor control. The Bypass Selected relay is de-
energized when Drive Mode has been selected as the method of motor control.
Bypass Run (5) [BYPASS RUN]
If configured for Bypass Run, the relay is energized when the bypass is running. The
Bypass Run relay provides an output only when the motor is running and powered
by the bypass. The Bypass Run relay is de-energized when the motor is not being
run in bypass.
Bypass Fault (6) [BYPASS FLT]
If configured for Bypass Fault, the relay is energized when a bypass fault has
occurred or when the bypass motor overload/underload protection has tripped. The
specific nature of the fault is indicated on the bypass control panel display. The
Bypass Fault relay is de-energized during normal operation.
E-Clipse bypass functions overview
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