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6.1.13 Start/Stop Conditions
Commands assigned to digital inputs. See
Digital Inputs
, par.5-1*.
Variable speed pump (lead)
Fixed speed pumps
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 (built-in relays are de-energized)
Safety Interlock
Coast to stop
Cut out (built-in relays are de-energized)
Function of buttons on the Local Control Panel
Variable speed pump (lead)
Fixed speed pumps
Hand On
Ramps up (if stopped by a normal stop com-
mand) or stays in operation if already running.
De-staging (if running)
Off
Ramps down
Cut out
Auto On
Starts and stops according to commands sent via
terminals or serial bus.
Staging/De-staging
VLT
®
AQUA Drive Design Guide
6 Application Examples
MG.20.N5.22 - VLT
®
is a registered Danfoss trademark
6-9
6
Содержание vlt aqua
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