The below setting options are all related to the Cascade Controller. Wiring diagrams and settings for parameter, see group 25-** for more details.
[120]
Lead Pump Start
Starts/Stops the Lead Pump (controlled by the frequency converter). A start requires that also a
System Start signal has been applied e.g. to one of the digital inputs set for
Start
[8]!
[121]
Lead Pump Alternation
Forces alternation of the lead pump in a Cascade Controller.
Lead Pump Alternation
, par. 25-50,
must be set to either
At Command
[2] or
At Staging or At Command
[3].
Alternation Event
, par.
25-51, can be set to any of the four options.
[130 - 138] Pump1 Interlock - Pump9 Interlock
For the above 9 setting options, par. 25-10, Pump Interlock, must be set to
On
[1]. The function
will also depend on the setting in par. 25-06, Fixed Lead Pump. If set to
No
[0], then Pump1 refers
to the pump controlled by relay RELAY1 etc. If set to
Yes
[1], Pump1 refers to the pump controlled
by the frequency converter only (without any of the build in relays involved) and Pump2 to the pump
controlled by the relay RELAY1. Variable speed pump (lead) cannot be interlocked in the basic Cas-
cade Controller.
See below table:
Setting in Par. 5-1*
Setting in Par. 25-06
[0] No
[1] Yes
[130] Pump1 Interlock
Controlled by RELAY1
(only if not lead pump)
Frequency Converter control-
led
(cannot be interlocked)
[131] Pump2 Interlock
Controlled by RELAY2
Controlled by RELAY1
[132] Pump3 Interlock
Controlled by RELAY3
Controlled by RELAY2
[133] Pump4 Interlock
Controlled by RELAY4
Controlled by RELAY3
[134] Pump5 Interlock
Controlled by RELAY5
Controlled by RELAY4
[135] Pump6 Interlock
Controlled by RELAY6
Controlled by RELAY5
[136] Pump7 Interlock
Controlled by RELAY7
Controlled by RELAY6
[137] Pump8 Interlock
Controlled by RELAY8
Controlled by RELAY7
[138] Pump9 Interlock
Controlled by RELAY9
Controlled by RELAY8
5-13 Terminal 29 Digital Input
Option:
Function:
[0] *
No Operation
Same options and functions as par. 5-1*
Digital Inputs
.
5-14 Terminal 32 Digital Input
Option:
Function:
[0] *
No operation
Same options and functions as par. 5-1*, except for
Pulse input
.
[1]
Reset
[2]
Coast inverse
[3]
Coast and reset inv
[5]
DC-brake inverse
[6]
Stop inverse
[7]
External interlock
[8]
Start
[9]
Latched start
[10]
Reversing
[11]
Start reversing
[14]
Jog
[15]
Preset reference on
[16]
Preset ref bit 0
[17]
Preset ref bit 1
[18]
Preset ref bit 2
8. How to programme the frequency converter
VLT
®
AQUA Drive
Operating Instructions
84
MG.20.M5.02 - VLT
®
is a registered Danfoss trademark
8
