7.1.14 Start/Stop Conditions
See
5-1* Digital Inputs
.
Digital input commands
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-energised)
Table 7.1 Commands Assigned to Digital Inputs
LCP keys
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
Table 7.2 LCP Key Functions
Application Examples
Design Guide
MG11BC02
Danfoss A/S © Rev. 06/2014 All rights reserved.
129
7
7
