Danfoss VLT Automation VT Drive FC 322 Programming Manual page 78

2 Parameter Description
[54] Auto start
[55] DigiPot Increase
[56] DigiPot Decrease
2
[57] DigiPot Clear
[60] Counter A (up)
[61] Counter A (down)
[62] Reset Counter A
[63] Counter B (up)
[64] Counter B (down)
[65] Reset Counter B
[66] Sleep Mode
[78] Reset Preventive Maintenance Word Resets all data in par. 16-96, Preventive Maintenance Word, to 0.
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
[121] Lead Pump Alternation
[130 - 138] Pump1 Interlock - Pump9 Interlock
5-10 Terminal 18 Digital Input
Option:
[0] No operation
[1] Reset
76
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A signal applied will put the frequency converter into Auto mode as if the LCP button
been pressed. See also Hand Start [53]
Uses the input as an INCREASE signal to the Digital Potentiometer function described in parameter
group 3-9*
Uses the input as a DECREASE signal to the Digital Potentiometer function described in parameter
group 3-9*
Uses the input to CLEAR the Digital Potentiometer reference described in parameter group 3-9*
(Terminal 29 or 33 only) Input for increment counting in the SLC counter.
(Terminal 29 or 33 only) Input for decrement counting in the SLC counter.
Input for reset of counter A.
(Terminal 29 and 33 only) Input for increment counting in the SLC counter.
(Terminal 29 and 33 only) Input for decrement counting in the SLC counter.
Input for reset of counter B.
Forces frequency converter into Sleep Mode (see par. 22-4*, Sleep Mode). Reacts on the rising edge
of signal applied!
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
Forces alternation of the lead pump in a Cascade Controller.
must be set to either At Command [2] or
25-51, can be set to any of the four options.
The function will depend on the setting in par. 25-06, Number of Pumps. If set to
Pump1 refers to the pump controlled by relay RELAY1 etc. If set to
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 inter-
locked in the basic Cascade Controller.
See below table:
Setting in Par. 5-1*
[130] Pump1 Interlock Controlled by RELAY1
(only if not lead pump)
[131] Pump2 Interlock Controlled by RELAY2
[132] Pump3 Interlock Controlled by RELAY3
[133] Pump4 Interlock Controlled by RELAY4
[134] Pump5 Interlock Controlled by RELAY5
[135] Pump6 Interlock Controlled by RELAY6
[136] Pump7 Interlock Controlled by RELAY7
[137] Pump8 Interlock Controlled by RELAY8
[138] Pump9 Interlock Controlled by RELAY9
Function:
MG.20.W1.22 - VLT is a registered Danfoss trademark
VLT Automation VT Drive FC322
Programming Guide
Start
[8]!
Lead Pump Alternation
At Staging or At Command [3]. Alternation Event
Yes
[1], Pump1 refers to the
Setting in Par. 25-06
[0] No [1] Yes
Frequency Converter control-
led
(cannot be interlocked)
Controlled by RELAY1
Controlled by RELAY2
Controlled by RELAY3
Controlled by RELAY4
Controlled by RELAY5
Controlled by RELAY6
Controlled by RELAY7
Controlled by RELAY8
Auto On
has
, par. 25-50,
, par.
No [0], then