4-20Ma Loop; Default - Factory Settings - Macurco CD Series User Instructions

Macurco CD-xx H/MC Manual

4.4 4-20mA Loop

Clean Air – With the 4-20 mA function turned "On" and the current concentration of CO
mA reading equivalent to the current gas reading of the detector.
Fan Level – With the 4-20 mA function turned "On" and the current concentration of CO
Fan Relay Setting (Frs), the 4-20mA loop will output between 4 mA and 20 mA depending on the current concentration of CO
See figure 3-1 4-20 mA Output diagram
31 T
Alarm Level – With the 4-20 mA function turned "On" and the current concentration of CO
the Alarm Relay Setting (Ars), the 4-20mA loop will output between 4 mA and 20 mA depending on the current concentration of
CO . See figure 3-1 4-20 mA Output diagram
2
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Trouble – With the 4-20 mA function turned "On" and Trouble Fan Setting enabled. The 4-20mA loop will output less than 4 mA
or greater than 20 mA depending on the Trouble condition. See section
4.5 Default – Factory Settings
Setting:
Power Up Test
Display
Buzzer
Alarm Relay Setting
Alarm Relay Configuration
Fan Relay Setting
Fan Relay Delay
Fan Relay Minimum Runtime
Fan Relay Latching
Trouble Fan Setting
4-20mA
REV – 1.1
or figure 3 -9 12-Series 4-20 mA Output diagram
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or figure 3-9 12-Series 4-20 mA Output diagram
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Default:
On
On
On
4000 ppm
Normally Open (NO)
1000 ppm for CD-xxH
1000 ppm for CD-xxMC
3 minutes
0 minutes
Off
Off
On
Table 4-1 Default settings
[34-2900-0510-8]
ppm, the 4-20mA loop will output a
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ppm detected is at or greater than the
2
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31T
ppm detected is at or greater than
2
P P
31T
5.1 On-Board Diagnostics .
31T 31T
.
2
P P
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