Emerson E2 Manuel D’Utilisation

The RLDS features full two-way communications via 

an RS485 interface. MODBUS RTU is the communication 
protocol standard and can be connected directly to an E2 
controller version 3.02 and above. The RLDS is dynami-
cally licensed for 15 devices for RX/BX/CX 300-500 and 
1 for RX100 and CX100 (Same as IRLDS).

The Copeland Scroll — K5 Refrigeration Compressor 

(Lrg Ref Scroll) application can monitor large type com-
pressors using the MODBUS network on E2 versions 3.02 
and above. The Copeland Scroll — K5 Refrigeration 
Compressor is supported on E2 CX-400, CX-100 and 
above. The E2 monitors and records compressor informa-
tion, configuration setup, status display, and alarm han-
dling. The Copeland Scroll — K5 Refrigeration 
Compressor will be associated with the suction group from 
the Compressor Association screen. The scroll can be 
associated by pressing 

 - Controller Associa-

tions then 

 - Compressor. 

The XM series is a set of digitalcase controllers for low 

to medium units. The XM series control refrigeration sole-
noids and defrost (electric or hot gas), evaporator fans, 
lights and have an auxiliary output. These devices are 
available on E2 version 3.02 and above.

The XM670 is high level microprocessor based con-

trollers for multiplexed cabinets suitable for applications 
on medium or low temperature. It can be inserted in a 
LAN of up to 8 different sections which can operate, 
depending on the programming, as stand alone controllers 
or following the commands coming from the other sec-
tions. The XM670 is provided with 6 relay outputs to con-
trol the solenoid valve, defrost (which can be either 
electrical or hot gas) the evaporator fans, the lights, an 
auxiliary output and an alarm output. The devices are also 
provided with four probe inputs, one for temperature con-
trol, one to control the defrost end temperature of the 
evaporator, the third for the display, and the fourth can be 
used for application with virtual probe or for inlet/outlet 
air temperature measurement. Finally, the XM670 is 
equipped with the three digital inputs (free contact) and 
are fully configurable.

The XM679 is similar to the XM670, but with one 

relay output to drive pulsed electronic expansion valves. 
The XM679 also contains two probes that are dedicated 
for superheat measurement and regulation.

The XM678 is similar to the XM670, but with one 

stepper valve output to drive an electronic expansion 
valve. The XM678 also contains two probes that are dedi-
cated for superheat measurement and regulation.

Box Temp Fault

Chassis temperature is out of range

Bench Temp Fault

Sensor temperature is out of range

Manifold Pressure Fault

Pressure readings out of range

RS-485 Fault

Communication Error

Loop Fault

Current loop is open

Config. Fault

No zones are enabled

Zero Filter Fault

Charcoal filter needs repl.

Gain Set Fault

Gain setting is out of range

A2D Fault

A/D converter is not working

Zone Flow Fault

No flow during sample cycle

Purge Flow Fault

No flow during purge cycle

Over Range Fault

Conc. above measurable range

Zero Range Fault

Sensor voltage outside limits

Clipping Fault

Sensor output voltage too high