Tek-Trol Tek-Flex 4100A, Quick Start Manual, Page: 7 / 9

Technology Solutions
Tek-Bar 3100
Tek-Flex 4100A
5. Power Supply
1 2 3 4 5 6 7 8 9 10
4-20mA-
4-20mA+
DC IN + DC IN -
IS+
A B
COMMS
Sinking 4-20mA from user
device (max 750ohm)
Sinking 4-20mA from
Tek-Flex 4100A (max 250 ohm)
OR
Power Supply
DC In +
DC In -
A
B
4-20 mA -
4-20 mA -
4-20 mA +
IS+
Communication
Output (Sinking)
Output (Sourcing)