32
BIFFI FAIL SAFE ELECTRIC ACTUATORS, MODEL EFS2000V4
InstructIon and operatIng Manual
Control mode
Press YES if the display shows the correct
control mode or press NO to scroll through the
list of available options (push-to-run, latched,
latched with instant reverse, push to run rel.
As5-6). Press YES to confirm.
The option ‘push to run rel. As5-6’ is used
when a remote enable of local commands is
required. With the local selector in LOCAL, to
press the OPEN or CLOSE local push buttons
cause the relays As5 or AS6 to switch, but no
command is sent to the motor. The control PLC
should read the status of the above relays and
send an open or close command on the remote
inputs. (see chapter ‘remote controls, push to
run mode’) (see relevant electrical diagram
when the option is used).
LED’s color
• Press YES if the color of the open LED is
correct. Press NO to change it, then YES to
confirm.
• Press YES if the color of the close LED is
correct. Press NO to change it, then YES to
confirm.
• Press YES if the color of the alarm LED is
correct. Press NO to change it, then YES to
confirm.
13.1.6 Output relays
Monitor relay
The voltage-free, change-over, contacts of the
monitor relay indicate that the actuator is either
available for remote control or that a problem
or a condition preventing remote control of the
valve exists.
Status Alarm
• Open limit • Blinker • Motor over-temperature • Low lithium battery (if present)
• Closed limit • Mid-travel position • Over-torque • Warnings
• Position >= xx % • Local selected • Over-torque in OP • Mid travel alarm in CL/OP
• Position <= xx % • Remote selected • Over-torque in CL • EFS in MANUAL
• Closing • Local stop pressed • Valve jammed in OP • PST failed
• Opening • PST signal active • Valve jammed in CL • MAINS-only AS8
• Motor running • Manual operation • Valve jammed • EFS mid travel
The monitor relay is normally energized and
will be de-energized on:
• Main voltage failure
• Lost phase
• Internal temperature alarm
• K1, K2 contactor failure
• Position sensor failure
• Speed sensor failure
• Configuration error
• HWerror
• Mid travel alarm
• EFS mid-travel alarm
• EFS in MANUAL mode
The following situation can be individually
added to switch-over the monitor relay:
• LOCAL/STOP pressed
• LOCAL/OFF selected
• ESD-EFS
• Manual operation
• Motor over-temperature
• Over-torque
• Jammed valve
• Low lithium battery (if present)
Auxiliary output relays
For status indication or diagnostic purposes,
8voltage-free contacts of 8 relays are available
to be configured individually to switch for the
following conditions:
To Next Page
Loading...
