Danfoss VLT FC 100 Series Programming Manual page 75

Parameter Description
3 3
[196] Fire Mode
[197] Fire Mode was
Act.
[198] Drive Bypass
The setting options below are all related to the cascade
controller.
Wiring diagrams and settings for parameter, see parameter
group 25-** for more details.
[200] Full
Capacity
[201] Pump1
Running
3-48
®
VLT
valve will be closed, allowing the
compressor to operate normally. This
procedure will not be activated again
before a new start is initiated and the
Adjustable frequency drive speed is zero
during the receiving of start signal.
1-71 Start Delay can be used in order to
delay the motor start. The Bypass valve
control principle:
Speed
REF
Speed
Min
ON
OFF
ON
OFF
Start Stop
Figure 3.21
The Adjustable frequency drive is
operating in Fire Mode. See parameter
group 24-0* Fire Mode.
The Adjustable frequency drive has been
operating in Fire Mode, but is now back
in normal operation.
To be used as signal for activating an
external electromechanical bypass
switching the motor direct on line. See
24-1* Drive Bypass.
CAUTION
If enabling the Drive Bypass Function,
the Adjustable frequency driveis no
longer Safety Certified (for using the
Safe Stop in versions where included).
All pumps running and at full speed
One or more of the pumps controlled by the
cascade controller are running. The function
will also depend on the setting of in
25-06 Number Of Pumps. If set to No [0] Pump
1 refers to the pump controlled by relay
RELAY1 etc. If set to Yes [1] Pump 1 refers to
the pump controlled by the Adjustable
frequency drive only (without any of the build
in relays involved) and Pump 2 to the pump
MG11CD22 - VLT
HVAC Drive Programming Guide
[202] Pump2
Running
[203] Pump3
Running
Setting in parameter
group 5-3*
[200] Pump 1
Running
[201] Pump 2
Time
Running
[203] Pump 3
Time
Running
Time
Table 3.13
5-30 Terminal 27 Digital Output
Same options and functions as parameter group 5-3*.
Option:
[0]
*
5-31 Terminal 29 Digital Output
Same options and functions as parameter group 5-3*.
Option:
[0]
*
5-32 Term X30/6 Digi Out (MCB 101)
This parameter is active when option module MCB 101 is
mounted in the Adjustable frequency drive. Same options and
functions as parameter group 5-3*.
Option:
[0]
*
5-33 Term X30/7 Digi Out (MCB 101)
This parameter is active when option module MCB 101 is
mounted in the Adjustable frequency drive. Same options and
functions as parameter group 5-3*.
Option:
[0]
*
® is a registered Danfoss trademark
controlled by the relay RELAY1. See the table
below:
See [201]
See [201]
Setting in 25-06 Number Of Pumps
[0] No
Controlled by Adjustable
RELAY1 Frequency Drive
Controlled by Controlled by
RELAY2
Controlled by Controlled by
RELAY3
Function:
No operation
Function:
No operation
Function:
No operation
Function:
No operation
[1] Yes
controlled
RELAY1
RELAY2