Specifications

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

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