Operating instructions

[160] No alarm The output is high when no alarm is present.
[161] Running
reverse
The output is high when the frequency
converter is running counter clockwise (the
logical product of the status bits ‘running’
AND ‘reverse’).
[165] Local
reference
active
The output is high when par. 3-13 Reference
Site = [2] Local or when par. 3-13 Reference
Site = [0] Linked to hand auto at the same
time as the LCP is in [Hand on] mode.
[166] Remote
reference
active
The output is high when par. 3-13 Reference
Site [1] or Linked to hand/auto [0] while the
LCP is in [Auto on] mode.
[167] Start
command
active
The output is high when there is an active
Start command (i.e. via digital input bus
connection or [Hand on] or [Auto on], and
no Stop command is active.
[168] Drive in hand
mode
The output is high when the frequency
converter is in Hand on mode (as indicated
by the LED light above [Hand on].
[169] Drive in auto
mode
The output is high when the frequency
converter is in Hand on mode (as indicated
by the LED light above [Auto on].
[180] Clock Fault The clock function has been reset to default
(2000-01-01) because of a power failure.
[181] Preventive
Maintenance
One or more of the Preventive Maintenance
Events programmed in par. 23-10 Mainte-
nance Item has passed the time for the
specified action in par. 23-11 Maintenance
Action.
[190] No-Flow A No-Flow situation or Minimum Speed
situation has been detected if enabled in
par. 22-21 Low Power Detection and/or
par. 22-22 Low Speed Detection.
[191] Dry Pump A Dry Pump condition has been detected.
This function must be enabled in
par. 22-26 Dry Pump Function.
[192] End of Curve A pump running with max. speed for a
period of time without reaching the set
pressure has been detected. To enable this
function please see par. 22-50 End of Curve
Function.
[193] Sleep Mode The frequency converter/system has turned
into sleep mode. See par. 22-4*.
[194] Broken Belt A Broken Belt condition has been detected.
This function must be enabled in
par. 22-60 Broken Belt Function.
[195] Bypass Valve
Control
The bypass valve control (Digital / Relay
output in the frequency converter) is used
for compressor systems to unload the
compressor during start-up by using a
bypass valve. After the start command is
given the bypass valve will be open until the
frequency converter reaches par. 4-11 Motor
Speed Low Limit [RPM]) . After the limit has
been reached the bypass valve will be
closed, allowing the compressor to operate
normally. This procedure will not be activa-
ted again before a new start is initiated and
the frequency converter speed is zero during
the receiving of start signal. Par. 1-71 Start
Delay can be used in order to delay the
motor start. The Bypass valve control princi-
ple:
T ime
REF
M in
Speed
ON
T ime
T
ime
OFF
ON
OFF
Star t
St op
1
30B
A2
5
1
.
1
0
Speed
[196] Fire Mode The frequency converter is operating in Fire
Mode. See parameter group24-0* Fire Mode.
[197] Fire Mode was
act.
The frequency converter has been operating
in Fire Mode, but is now back in normal
operation.
[198] Drive Bypass To be used as signal for activating an
external electromechanical bypass switching
the motor direct on line. See 24-1* Drive
Bypass.
If enabling the Drive Bypass Function, the
frequency converter is no longer Safety
Certified (for using the Safe Stop in versions
where included).
The below setting options are all related to the Cascade
Controller.
Wiring diagrams and settings for parameter, see group 25-**
for more details.
[200] Full
Capacity
All pumps running and at full speed
[201] Pump1
Running
One or more of the pumps controlled by the
Cascade Controller are running. The function
will also depend on the setting of in
par. 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 frequency converter
only (without any of the build in relays involved)
and Pump 2 to the pump controlled by the relay
RELAY1. See below table:
[202] Pump2
Running
See [201]
[203] Pump3
Running
See [201]
Parameter Description
VLT
®
HVAC Drive Programming Guide
MG.11.CA.02 - VLT
®
is a registered Danfoss trademark 63
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