Tekmar Boiler Control 265 Data Brochure page 22

The 4 to 20 mA output can be converted to 1 to 5 V (dc) using an
external 250 Ω resistor across the Mod 1 (Mod 2, Mod 3) terminals.
The 4 to 20 mA output can be converted to 2 to 10 V (dc) using an
external 500 Ω resistor across the Mod 1 (Mod 2, Mod 3) terminals.
The 0 to 20 mA output can be converted to 0 to 5 V (dc) using an
external 250 Ω resistor across the Mod 1 (Mod 2, Mod 3) terminals.
The 0 to 20 mA output can be converted to 0 to 10 V (dc) using an
external 500 Ω resistor across the Mod 1 (Mod 2, Mod 3) terminals.
The 4 to 20 mA output can be converted to a 0 - 135 Ω output for
a Modutrol IV™ gas valve actuating motor using a 0 - 135 Ω tekmar
Converter 005 (sold separately).
The 4 to 20 mA output can be converted to a 0 - 135 Ω output for
a V9055™ gas valve actuating motor using a 0 - 135 Ω tekmar
Converter 005 (sold separately).
™Modutrol IV and V9055 are trademarks of Honeywell, Inc.
© 2010 D 265 - 07/10
Modutrol IV™
0 - 135 Ω
Actuating
Motor
Modutrol IV
B
R
W
+
-
tekmar
22 of 36
500 Ω resistor
4 - 20 mA converted
to 2 - 10 V (dc) output
OR
250 Ω resistor
4 - 20 mA converted
to 1 - 5 V (dc) output
Converting the 4 - 20 mA
Output to Operate a
1 - 5 or 2 - 10 V (dc) Device
500 Ω resistor
0 - 20 mA converted
to 0 - 10 V (dc) output
OR
250 Ω resistor
0 - 20 mA converted
to 0 - 5 V (dc) output
Converting the 0 - 20 mA
Output to Operate a
0 - 10 V (dc) Device
Modutrol IV
B
R
W
+
-
tekmar
V9055
B
R
W
+
-
tekmar
V9055
B
R
W
+
-
tekmar
V9055™
0 - 135 Ω
Actuating
Motor