Danfoss VLT HVAC Series Programming Manual page 75

VLT ® HVAC Drive Programming Guide
[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
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
[2] Coast inverse
[3] Coast and Reset Inv
[5] DC brake inverse
[6] Stop inverse
[7] External interlock
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 the adjustable frequency drive into sleep mode (see par. 22-4*). Reacts on the rising edge
of signal applied!
Maintenance Word
Starts/stops the lead pump (controlled by the adjustable frequency drive). 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. par.25-50
At Command
be set to either [2] or
can be set to any of the four options.
For the above 9 setting options, par. 25-10 must be set to
Fixed Lead Pump
the setting in par.25-05
Yes
by relay RELAY1, etc. If set to
frequency drive only (without any of the built-in relays involved) and Pump2 to the pump controlled
by the relay RELAY1. Variable speed pump (lead) cannot be interlocked.
See below table:
Setting in Par. 5-1*
[130] Pump1 Interlock
[131] Pump2 Interlock
[132] Pump3 Interlock
[133] Pump4 Interlock
[134] Pump5 Interlock
[135] Pump6 Interlock
[136] Pump7 Interlock
[137] Pump8 Interlock
[138] Pump9 Interlock
Function:
MG.11.C6.22 - VLT ® is a registered Danfoss trademark
3 Parameter Description
to 0.
Lead Pump Alternation
At Staging or At Command
[3]. par.25-51
On
[1]. The function will also depend on
No
. If set to [0], then Pump1 refers to the pump controlled
[1], Pump1 refers to the pump controlled by the adjustable
Number Of Pumps
Setting in par.25-06
[0] No
Controlled by RELAY1 Adjustable frequency drive
(only if not lead pump)
(cannot be interlocked)
Controlled by RELAY2 Controlled by RELAY1
Controlled by RELAY3 Controlled by RELAY2
Controlled by RELAY4 Controlled by RELAY3
Controlled by RELAY5 Controlled by RELAY4
Controlled by RELAY6 Controlled by RELAY5
Controlled by RELAY7 Controlled by RELAY6
Controlled by RELAY8 Controlled by RELAY7
Controlled by RELAY9 Controlled by RELAY8
3
Start
[8]!
, must
Alternation Event
,
[1] Yes
controlled
3-51