User Guide Revision 1.12
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P8-05
Clean Function Ramp Time
0.0
6000
30
Secs
Independent ramp rate used only for the pump automatic cleaning function (see P8-03) when the motor is Accelerated as part of the
cleaning cycle.
Note:
For full detail of Clean function configuration see section 7.5, Pump Clean Function, or contact your local drive distributor
P8-06
Load Monitor Enable
0
3
0
-
This parameter enables the Load Profile Monitoring Function (load current monitoring), which can be used to detect belt failure in
belt driven fan applications, or Dry Pump, Pump Blockage or broken impeller in Pump applications.
0: Disabled
1: Low Load Detection Enabled (Belt Failure / Dry Pump / Broken Impeller)
2: High Load Detection Enabled (Pump Blockage)
3: Low and High Current Detection
Adjustment of parameter P8-06 (<>0) will cause the drive to automatically run the motor through its programmed frequency range
upon the next drive enable (input enable). Ensure the application is in a suitable condition to allow the motor to run safely through
its frequency range prior to enabling this feature.
P8-07
Load Profile Bandwidth
0.1
50.0
1.0
Amps
Parameter sets a bandwidth around the Load profile generated by P8-06. If P8-06 has been set to an appropriate value to detect an
over /under load condition and the drive operates outside of the bandwidth set in P8-07 for a period longer than that defined by P8-
08 then the drive will trip. Value entered in P8-07 is the value between the normal current and the trip level, hence total bandwidth
for the function is 2 x P8-07.
P8-08
Load Monitor Trip Delay
0
60
0
Secs
Parameter sets a time limit for the Load profile generated by P8-06. If P8-06 has been set to an appropriate value to detect an over
/under load condition and the drive operates outside of the bandwidth set in P8-07 for a period longer than that defined by P8-08
and then the drive will trip.
Note:
For full detail of Load Profile Monitoring function configuration see section 7.4, Load Profile Monitoring Function, or contact your
local drive distributor
P8-09
Fire Mode Logic
0
1
0
-
When Fire mode is assigned to a digital input on the drive then the logic configuration for the input is set by P8-09 to allow normally
open or normally closed activation. Default behaviour is for Input logic off (0) to activate fire mode (Open activation).
Input configuration for Fire mode is set by parameter P1-13 or can be user defined by the setting of P9-32.
0 : Open Activation
1 : Closed Activation
P8-10
Fire Mode Speed
-P1-01
P1-01
5
Hz / Rpm
Sets the operational frequency of the drive when Fire Mode is selected. Drive will maintain operation at this frequency until the fire
mode signal is removed or the drive is no longer able to sustain operation.
Note:
For full detail on the Fire mode function see section 7.8, Fire Mode Function, or contact your local drive distributor
P8-11
Bypass Mode on Fault
0
1
0
-
Parameter configures the drive to switch to bypass mode automatically should a trip occur on the drive. When enabled the drive
standard relays 1 and 2 are dedicated to bypass control and cannot be assigned other functions.
0 = Disabled
1 = Enabled
P8-12
Bypass mode of Fire
0
1
0
-
Parameter configures the drive to switch to bypass mode automatically should an input to the drive be configured for Fire Mode
operation and that input becomes active. When enabled the drive standard relays 1 and 2 are dedicated to bypass control and cannot
be assigned other functions.
0 = Disabled
1 = Enabled
P8-13
Bypass Contactor Changeover Time
0
30
2
Secs
Parameter active when Bypass function is enabled. Parameter P8-05 sets a time delay or changeover time between the switching of
the drive relays controlling the bypass circuitry.
Care must be taken when setting P8-13 to ensure that drive and DOL contactors are not switched in circuit simultaneously.
Both Mechanical and Electrical interlocking of drive and DOL contactors to regional standards are recommended in configuring the
Bypass function.
Note:
For full detail on the Bypass Mode function see section 7.7, Bypass Control Function, or contact your local drive distributor
P8-14
Pump Staging Function Select
0
2
0
-
Parameter enables the pump staging (cascade) function on the drive
0 = Disabled
1 = Single VFD with DOL Cascade (max 4 DOL pumps)
2 = Multiple Drive Cascade Master Drive (Only valid when drive set to Optibus master address, P5-01 = 1)
P8-15
Number of Assist Pumps
0
4
0
-
Parameter valid when P8-14 is set to 1 or 2 to enable Pump Staging Function. P8-15 set the number of assist pumps (P8-14 = 1) or
network slave drives (P8-14 = 2) that are available in the Pump Staging application. Setting the value to 0 disables Pump Staging.
P8-16
Pump Duty Switch Over Time
0
1000
0
Hours
In order to balance run time (duty) on each pump in the Pump staging application and to ensure periodic operation of each pump P8-
16 can be set with a time limit for pump switch over. When set to a value other than 0 (disabled) the operation of each staging pump
will be cycled to ensure the difference in duty between each pump does not exceed the time set in P8-16
Summary of Contents for HVAC H2
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