Edwards nXDS Series - Analogue speed control; Fault finding; The pump has failed to start or has stopped; The pump has failed to achieve the required performance

A735-01-880 Issue C
Page 24 © Edwards Limited 2017. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Operation
4.4 Analogue speed control
The Analogue Speed input is a process control source which enables the nXDS Scroll pump to run at variable operating
speeds. This speed control source is an alternative to standby speed control.
Figure 11 - Logic interface connections - analogue speed control
Note: 0.1 V
≡ 1% of Default Run Speed
1. Start switch
2. Analogue control switch
3. nXDS pump logic interface