Start/Stop Conditions - Danfoss VLT HVAC Drive FC 102 Design Manual

Application Examples

6.1.14 Start/Stop Conditions

For more information, see parameter group 5-1* Digital Inputs.
Command
Start (SYSTEM START/STOP)
Lead Pump Start
Coast (EMERGENCY STOP)
External Interlock
Table 6.1 Commands Assigned to Digital Inputs
6 6
Hand On
Off
Auto On
Table 6.2 Function of LCP Keys
168
Design Guide
Variable speed pump (lead)
Ramps up (if stopped and there is a
demand)
Ramps up if SYSTEM START is active
Coast to stop
Coast to stop
Variable speed pump (lead)
Ramps up (if stopped by a normal stop
command) or stays in operation if already
running
Ramps down
Starts and stops according to commands via
terminals or serial bus cascade controller
only can work when the frequency converter
is in "Auto ON" mode
Danfoss A/S © Rev. 05/2014 All rights reserved.
Fixed speed pumps (lag)
Staging (if stopped and there is a demand)
Not affected
Cut out (correspond relays, terminal 27/29
and 42/45)
Cut out (built in relays are de-energized)
Fixed speed pumps (lag)
Destaging (if running)
Destaging
Staging/Destaging
MG16C202