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AGL_Unit_LOCU_EN_Rev00
2.22.2 Ambient temperature sensor
An ambient temperature sensor supplied by Emerson is connected to the electronic controller. This
temperature sensor has several f unctionalities like emergency mode control, lower f an speed
limitation and crankcase heater control.
2.22.3 Refrigerant level control
– Leak detection device
The liquid receiver is equipped with an external liquid level watch LW4-L120 from Alco Controls. This
device provides a digital signal to the XCM25D system controller in case of low charging level inside
the receiver. As a result, system leakage can be detected and communicated at a very early stage.
The LW4-L120 device is connected to the digital input
DI3
(terminals X1.65/66/67).
2.22.4 Fan failure
– Fan feedback
Thanks to the introduction of EC fan technology the XCM25D system controller gets feedback from
the f ans about their condition. In case of f ailure the digital input
DI7
(terminals X1.55/56/57) is
activated and a f an alarm is generated.
2.23 Alarm output (DO5) of the XCM25D controller
The digital output
DO5
is pre-configured as an alarm contact. The relay (max. 5 A, 250 V AC) is
activated in case of alarms and lockouts. Warnings will be shown only on the controller display.
This setting can be adjusted using parameter
S01
.
Содержание Copeland OLE-49
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