Hanbell RC2 Series, Инструкция по установке и запуску

Страница: 13 / 41

COMPRESSOR INSTALLATION & START-UP GUIDE REVISION M
13
7.1. Description - INT69HBY DIAGNOSE
Hanbell supplies INT69 HBY Diagnose for motor protection with monitoring functions of phase loss, phase sequence, motor
temperature, and discharge temperature. The module has built in flash codes that are helpful for diagnosing safety faults.
In order to protect the compressor, each RC2 series compressor has been built with three PTC temperature sensors inside the
motor coil and one at the discharge port neck of the compressor. These sensors are connected to the motor module to monitor
coil temperature and discharge temperature. Up to 9 sensors can be connected in series and used with one module.
If the temperature in one of the positions monitored exceeds nominal response temperature of the respective PTC thermistor
(230° F, 4.5 ohms ±20%), the sensor resistance increases and the module trips (M1 and M2 open). The failure results in
a lockout. The module resets when the response temperature drops 3k
Ω
(when temp decreases below 212°F, 2.75 ohms
±20%). 5 min delay for the first PTC failure, 60 min delay for the 2
nd
failure, latching lockout for the 3
rd
within 24 hour period.
Monitoring is inactive for 20 seconds after motor stop to prevent nuisance trips from brief reverse rotation.
Phase failure (loss) and Phase sequence safety trips result in a first time lockout. Phase sequence monitoring is active
1 second after motor start for 10 seconds. Phase loss is monitored 1 second after motor start till motor stop.
Lockout and time delay can be canceled by interrupting power to the module for 5 seconds. An optional power supply reset
button can be added to electrical connection box.
7.2. Flash Codes
RED ORANGE
RED ORANGE
Chapter - 7. INT69HBY MOTOR PROTECTION