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(CT-4/20MA)
Then the letter s appears to define the type of standard to be adopted
• S1 mode 4-20 mA (default of monitor unit)
• S2 mode 0-20 mA
Below is the letter t which defines the scan time in seconds valid only in d = 6 mode
• Values selectable in the range (1-3600 seconds)
• default of the control unit t=60 s
TEST RELAYS
Pushing ENTER/TEST, the device performs a display test, pushing and holding the
same buttons, the device enters in test relays mode.
With the buttons UP/DOWN it is possible to switch a relays state. To test the other
relays, push ENTER/TEST button, to exit push AUTO/MANUAL button.
THERMOMETRICAL PROBES DIAGNOSTIC
The errors on probes during normal working are indicated as follows:
• Deconnected probes: switching off FAULT Relay, flashing light display, the ICF
word appear on display with the number of the channel and the fault led light on.
• Short circuit probes: switching FAULT Relay, flashing light display, the SCF word
appear on display with the number of the channel and the fault led light on.
In case of fault of the active probes, the output 4-20mA or 0-20mA is switched off
at zero whatever the chosen configuration. (CT-4/20MA)
MODALITY OF THE INTERVENTIONS
When one of the thermometric probes detects a temperature over 1 degree
centigrade to the prefixed value, after approx. 1 the relevant relay and led switch.
As soon as the surveyed temperature descents under 1 degree centigrade the relay
and the led changes again.
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