Diagnostic Alarms; Copeland Scroll - K5 Refrigeration Compressor; Xm Series Of Case Controllers; Xm670 - Emerson E2 Installation And Operation Manual

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).
6.3.10.1

Diagnostic Alarms

Diagnostic Alarm
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
Table 6-7
-Diagnostic Alarm Outputs
6.3.11 Copeland Scroll — K5
Refrigeration Compressor
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.
•
6-12 E2 RX/BX/CX I&O Manual
Descriptions
Figure 6-10
- Compressor Association screen
6.3.12 XM Series of Case
Controllers
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.
6.3.12.1

XM670

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.
6.3.12.2

XM679

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.
6.3.12.3

XM678

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.
026-1614 Rev 4 5-JAN-2013