Chapter 4: E2 Controller

NOTE: Display screens shown with a dashed border appear only if the application feature is enabled.

Custom Alarm Setup (Optional)

The E2 controller may be enabled to activate a Custom Alarm output and energize a designated N.O./N.C. relay. A custom alarm output is set up by adding the binary bitmask numbers assigned to the specific alarms and signal failures you wish to monitor via the relay and then entering them in the Custom Alarm Setup screen.

Figure 4-56. Custom Alarm Setup screen.

NOTE: Custom alarm display screens may appear even if the feature is not enabled. In this case, changes made to these screens will have no effect.

You can select any mix of the 48 alarm variables as shown in the tables that follow. As an example, for a custom alarm based only on the occurrence of moisture alarm, fire/smoke, condensate pan, failure of the return humidity sensor, you would enter the following bitmask values for the applicable alarm numbers and enter 0 for the rest:

Custom Alarm number 1–8

Moisture alarm (No. 4) = 8

Custom Alarm number 9–16

Fire/smoke (No. 10) + Condensate pan (No. 12) = 10 (2+8)

Custom Alarm number 25–32

Return humidity sensor (No. 29) = 16

The custom alarms are set up by entering the bitmask totals developed from the tables shown next.

Table 4-4. Alarms 1 to 8.

Number

Description

Bitmask

Default

 

 

 

 

1

Upper fan alarm

1

1

 

 

 

 

2

Lower fan alarm

2

2

 

 

 

 

3

Middle fan alarm

4

4

 

 

 

 

4

Moisture alarm

8

8

 

 

 

 

5

Emergency shutdown

16

16

 

 

 

 

6

Remote shutdown

32

32

 

 

 

 

7

Customer alarm

64

0

 

 

 

 

8

Airflow alarm

128

128

 

 

 

Factory Default Bitmask Total

 

191

 

 

 

 

Page 78

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Image 78
Black Box CRDX-A-FS-24KW, CRDX-W-FS-12KW Custom Alarm Setup Optional, Moisture alarm No =, Return humidity sensor No =

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