Specifications

14
© 2012 Emerson Climate Technologies, Inc.
Printed in the U.S.A.
AE8-1368 R2
Figure 4.10 – ISD Setup Screen (General Tab)
Figure 4.11 – ISD Setup Screen (Setup Tab)
While running in failsafe mode the compressor will
continue to run until either a fault occurs or until
communications is re-established with the rack
controller. This is to say that the only system controls
in place to cycle the compressor are the high and low
pressure safety controls. The trip/reset values for the
high and low pressure controls are 360/250psi and
3/10psi (-2/8psi for R407A and R407C compressors)
respectively. While it is not recommended to run the
compressors in failsafe mode for long periods, it may
be desirable to use adjustable low pressure cutouts
to stage the compressors. This will allow for fi ner
compressor control over the fi xed value switch. To
apply an adjustable pressure cutout you may simply
wire it in place of the existing pressure switch.
4.7 CoreSense Diagnostics v.2.11 Setup Screens
The CoreSense Diagnostics module has many
confi gurable settings that can be programmed through
the E2.
Important Note: E2 fi rmware versions 3.02F01 and
later have an improved offl ine programming feature.
This feature ensures that modules retain the factory
preset programming. In order to update the module
confi guration, follow these steps:
1. After navigating the setup screens and making
the desired changes return to the CoreSense
Diagnostics summary screen as shown in Figure
4.17.
2. Press Enter to reveal the device Actions Menu
as shown in Figure 4.17b
3. Press 9 Application Commands. The E2 screen
should look like Figure 4.17c
4. To program the module with changes made in
the E2, press 2 Send E2 Cfg to Device. To verify
module settings press 1 Send Device Cfg to E2.
To access the confi guration screens for the CoreSense
Diagnostics modules follow these steps:
1. From the main menu press 5 (Confi gured
Applications)
2. Press 104 (ISD 2.0)
3. Highlight the desired device and press F5
(Setup)
The E2 screen should look like Figure 4.10.
On the General tab the device name is displayed. The
default naming convention is shown as the device type
(ISD2) followed by the device number (equal to the node
address). If it is desired to have the device renamed
in terms of the suction group for easier identifi cation
simply type over the default information using the E2
keypad. Note that the name is limited to 14 characters.
If additional characters are needed, information may be
entered in the cell next to Long Name.
To access additional confi guration settings for the
module Press Ctrl+2 to navigate to the Setup tab.
The E2 screen should look like Figure 4.11.
The parameters that can be set from this screen include:
unloaders
crankcase heater control
anti-short cycle time
maximum continuous current (MCC)
compressor voltage
compressor frequency