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ProComSol, Ltd HM-BT-VIN User Manual
MAN-1006 4/07/2006 Page 2
Power Connection:
J1-1 – V+
J1-2 – V-
Reset Switch
A reset switch is provided on the front panel to reset the HM-BT-VIN without having to
remove power. This switch is useful for troubleshooting any communication problems.
It is not needed for normal use.
Press and hold the switch for 5 seconds to perform a reset.
Power LED
When the unit is powered, the Red LED will be on.
Bluetooth Activity LED
This Blue LED will flicker when the Bluetooth connection is open. The LED will be
solid on when successfully linked to a Bluetooth transmitter. Under normal HART
communication conditions, the LED will be solid on.
HART Connections
There are several ways to make the HART connection. Your specific situation will
determine the best connection method to use to reduce installation time.
Standard HART Connection
The front panel terminals J1-3 and J1-4 are the HART connections. The modem can be
connected in one of two ways: across the loop load resistor (A – B) or across the HART
transmitter terminals (C – D). See Figure 2.
Figure 2. Standard HART Connections
1. Across the Loop Resistor
J1-3 to A
J1-4 to B
2. Or, to the HART transmitter
J1-3 to C
J1-4 to D