1.5.2 Start/Stop Conditions
Commands assigned to digital inputs. See
Digital Inputs
, parameter group 5-1*.
Variable speed pump (lead)
Fixed speed pumps (lag)
Start (SYSTEM START/STOP)
Ramps up (if stopped and there is a
demand)
Staging (if stopped and there is a demand)
Lead Pump Start
Ramps up if SYSTEM START is active
Not affected
Coast (EMERGENCY STOP)
Coast to stop
Cut out (correspond relays, terminal 27/29
and 42/45)
External Interlock
Coast to stop
Cut out (built-in relays are de-energized)
Function of buttons on LCP:
Variable speed pump (lead)
Fixed speed pumps (lag)
[Hand On]
Ramps up (if stopped by a normal stop
command) or stays in operation if already
running
Destaging (if running)
[Off]
Ramps down
Destaging
[Auto On]
Starts and stops according to commands via
terminals or serial bus cascade controller
only can work when drive in "Auto ON"
mode
Staging/Destaging
Quick Guide
VLT
®
HVAC Basic Drive Cascade Controller Quick Guide
MG18F202 - VLT
®
is a registered Danfoss trademark
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