DIEL ME 100 V2 Manual De Instalacion Y Uso página 13

ENGLISH
FNA and FNB relays are used for drive fan cooling systems of electric machines or for
the conditioning of the environment where the machines are situated.
FAN relay is dedicated to the management of the fans of cooling of the transformer or
for the conditioning of the environment where the transformer is installed.
The ALARM and PRE AL relays switch on when the temperature is higher than one
degree of set level.
Each probe type PT100 is gifted with three wires, one of them is white and the other
two are red.
Connect the white wire to the terminal board marked whit sensor logo on plugs (3-6-9-
12-15-18-21-24).
The twenty-four connectors relevant to the eight probes are divided as follows:
Probe N. 1 connectors 1-2-3, Probe N. 2 connectors 4-5-6.
Probe N. 3 connectors 7-8-9, Probe N. 4 connectors 10-11-12.
Probe N. 5 connectors 13-14-15, Probe N. 6 connectors 16-17-18.
Probe N. 7 connectors 19-20-21, Probe N. 8 connectors 22-23-24.
Analogic port 4/20 mA:
• Positive TX+: connector 25.
• Negative TX-: connector 26.
• Maximum permissible impedance 500 Ohm.
Temperature range:
• Scale 4/20 mA (-10°C 4 mA - 200°C 20 mA)
• Transformation formula: Iout = (T+10)/210*16 + 4 (current in mA, temperature in °C)
All measured signals cables must preferably be:
• Separated from the power cables
• Screened better even if twisted
• With a section of not less than 0.5 mm
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MESSAGES DESCRIPTION
The letters that appear on single digit display assume the following meaning:
F: function mode (range 0-3)
P: pre alarm level, the PrE relay switch on when the temperature exceeds the level set
A: alarm level, the ALL relay switch on when the temperature exceeds the level set
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