Specifications

26
© 2012 Emerson Climate Technologies, Inc.
Printed in the U.S.A.
AE8-1368 R2
Is the compressor OFF?
Has the rack controller
issued a run command?
Does the rack controller
show a status code of “No
Communication to Control
Module”?
Normal Operation. The module
has gone into “loss of
communications” mode and the
failsafe setting is “off”. Refer to
secion 6.16 for communications
troubleshooting.
Normal – OFF
Fail Safe - OFF
A communication delay of
several seconds is normal
between the display
status and the
compressor status
Yes No
No
Normal Operation. A
run command has not
been issued by the rack
controller
Yes
Yes
Has the contactor been
manually closed?
Normal Operation. A run
command has not been
issued by the rack controller.
The module does not detect
a running compressor when
the contactor is manually
closed
No
Yes
6.6
Note: After every shut-down, there is a pre-
determined off-time before the compressor
is allowed to run again. This is shown as
“Anti Short Cycle Time xx.x Left” The
default setting is 0.1 minutes, configurable
through the setup option for each
compressor (see “Configured Applications”
on the E2 menu).
• No Demand
• Motor Current < 5 amps
• No Voltage
• No Communication; Fail Safe
Set For “Off”
Verify that the #9
dipswitch is in the “up”
position for network
mode
No
Is compressor
Current < 5
Amps?
No
Check that the motor
power lead passes
through the CT in the
terminal box. This power
lead should be from the
terminal with the black
voltage sensing lead.
If the displayed
current is incorrect vs
actual measured
compressor current,
replace the CT
No
Normal
Yes