LB
II
-PLUS Technical Manual
31
3.4
Electrical parts
3.4.1
INT69 HBY Diagnose protection module
A.
Application description:
The protection module INT69 HBY Diagnose is the advanced product of the protection module series, which is
used for the compressor protection microcontrollers. The flexible response function is added in the phase sequence
monitoring, which improves the practicability and prolongs the life of the refrigeration system. INT69 HBY Diagnose
automatically stores work and error data in a memory. Only through a specific transmission line, the data can be
read on a personal computer and be used for diagnostic analysis.
B.
Function description:
The PTC thermistor in series enters the signal input end of the protection module.
If any resistance value of the thermistors rises above the jump off value, the protection module will jump off.
The blocking value of PTC will reduce to the reset value. After 5 minutes of reset time, the module will
automatically reset. In the first disconnected 24 hours, if the PTC values rise to the reset value again, the reset
time will be 60 minutes. If the PTC third time rise to the reset value in 24 hours, the module will be locked and
cannot be reset automatically.
One second after the motor starts, the motor phase monitoring function will be activated and remain to be
activated for 5 seconds. Motor phase being abnormal or motor being under-phase will cause the protection
module to be disconnected and locked.
In order to avoid the tripping caused by reversal after the compressor shutdown, the phase monitoring function
will only maintain for 20 seconds after the motor is stopped.
LED (Red / Green / Orange) shows its working information.
The motor protection module cannot be used in the variable frequency drive device.
The PTC short circuit will cause deadlock, and the short cycle will lead to the reset delay.
If the reset delays when the temperature reduces or the error is removed, please reset the module. The
compressor needs to be restarted after the reset.
This module must be assembled and maintained by a professional electrician. It should have European or
national standards. When the module is connected to electrical equipment and cooling devices the
connection line between the junction box and the temperature sensor must be the insulation line.
C.
Technical data
Item
Technical data
Item
Technical data
Supply voltage
AC 50/60HZ 115/240V±10% 3VA
System PTC short circuit
monitoring
Normally <30Ω
Motor voltage
3 AC 50/60Hz 200/690V ±10%
Over frequency operation
Not support
— Sensor type
— R25, All
—
Maximum
connection
Connect 1-2 AMS sensors and 1-9 PTC
in serial as optional; serial connection
shall meet the DIN 44081 and DIN
44082 standards.
—Motor static jump off
1 times/24h
2 times/24h
3times/24h
5min±1min
60min±12min
Deadlock
