Start/Stop Conditions; Danfoss A/S © Rev. 06/2014 All Rights Reserved - Danfoss VLT FC 102 Series Design Manual

Application Examples

7.1.14 Start/Stop Conditions

See 5-1* Digital Inputs.
Digital input commands
Start (SYSTEM START/STOP)
Lead Pump Start
Coast (EMERGENCY STOP)
External Interlock
Table 7.1 Commands Assigned to Digital Inputs
LCP keys
[Hand On]
7 7
[Off]
[Auto On]
Table 7.2 LCP Key Functions
144
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 drive in
"Auto ON" mode
Danfoss A/S © Rev. 06/2014 All rights reserved.
Fixed-speed pumps (lag)
Staging (if stopped and there is a demand)
Not affected
Cut out (corresponding 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
MG11BC22