Ampcontrol Pty Ltd
– ABN 28 000 915 542
IPM V2 USER MANUAL
IPM2B003 Revision 15
– MAY/18
Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version
Page 43 of 83
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10
FAN BURP FUNCTION
The Burp Function of the IPM relay allows the progressive inflation of ventilation bags (tubes) by pulsing
the motor contactor, controlling the ventilation fan, several times at start up (see Section 12.6.5 for
operational sequence).
There are t
hree configurable parameters that control the Burp Function at start up, „Burp Number of
Pulses‟, „Burp Pulse On Time‟ and „Burp Pulse Off Time‟.
Selectable Settings:
„# Burp Pulses‟ (Level 6, Screen 25) - selectable at none and 1 to 6 (selection of “none” disables
the Burp Function).
„Burp On Time‟ (Level 6, Screen 26) and „Burp Off Time‟ (Level 6, Screen 27) - selectable at 0.6,
0.8, 1.0, 1.2, 1.5, 2.0, 2.5 and 3.0 seconds.
11
PUMP SNORE FUNCTION
The purpose of the IPM Snore Function is to (optionally) add a timed re-start to the IPM Relay after an
undercurrent trip has been detected. Refer to Section 7.5 for more information on the operation of the
undercurrent trip function.
11.1 Basic Operation
The basic operation of the snore function is illustrated using the following scenario:
Assume a pump is the load device of the relay, which pumps a dam. When the water level drops below
the pump pickup, the load current will drop significantly enough to be detected as an undercurrent trip
(as set in the settings level 6) by the IPM.
The Snore Function (Snore-Process) will operate only after configuration and activation via the IPM
menus. The snore function will operate after undercurrent is detected and will permit the pump to restart
after a time delay (tSnoreDelay). After this off period the pump will restart. During the first 4 second ON
period (tSnoreOn) the pump will run, and only if the pump remains in an undercurrent state, the IPM will
extend tSnoreDelay by 1.5 times and switch off the output relay for the new setting of tSnoreDelay. This
process will continue until the time reaches a maximum of tSnoreDelay x 8.
The initial setting for tSnoreDelay is obtained from a menu configuration setting (tSnoreSet). The
available initial settings are OFF, 5, 10, 15, 20, 8F, 15F, 20F, 30F, 60F
minutes
(the “F” represents a
fixed delay that does not extend tSnoreDelay as described above. If a load is detected during tSnoreOn
(that is, no undercurrent is detected), the pump will remain on, but tSnoreDelay will be reduced to ¾ of
its present setting; but not below tSnoreSet (this does not apply to the “F” settings). In the case where
the new tSnoreDelay is less than tSnoreSet, then tSnoreDelay shall be set to tSnoreSet.
When in tSnoreDelay mode, and if a „Start‟ is initiated from:
a)
The „Start‟ key (on the relay), or,
b) A pulse from the External Start input is detected
Then the relay will immediately abort the running tSnoreDelay and proceed through a power-on
sequence.
If a power failure occurs when the IPM is operating in Snore Mode, it will resume operating in Snore
Mode when power is restored. If Aux is open, or there is an EL fault on Power Up, the snore function will
wait for up to 15 seconds to start.