HM-USB-PWR User Manual
MAN-1044 6/15/2017
Our Quality Management System is
Page 3
ISO 9001:2008 Certified
LEDs
Two LEDs provide operating status information – 24Vdc and USB Power.
USB Power
This should illuminate when the USB connector is connected to your PC.
24Vdc
This should illuminate when the HART cable is connected to the “Modem + Power”
connector. This means 24Vdc power is present on the cable ends.
PC Power
No external power sources are required for the HM-USB-PWR. Power is derived from
the USB connection to the PC.
AC Power
If a PC is not available, the HM-USB-PWR comes with an AC Adapter. Simply plug the
AC Adapter into a power outlet and then plug the USB cable of the HM-USB-PWR into
the AC Adapter.
The USB Power LED will illuminate.
Test Software
Program “HM Test” is included on the installation CD to test the operation of the HM-
USB-PWR. Launch the program from the CD or from the installed icon. Enter the com
port that was assigned to the modem by Windows. Then select “Poll HART Network” to
connect to a HART device. The program sends HART Command 0 to determine what
transmitters are connected to the loop. The “Status” box will indicate successful
operation of the HM-USB-PWR in your system. Consult the “Troubleshooting” section
of this manual if test failure.
Troubleshooting
Verify the following:
1. Com port number in application is the HM-USB-PWR com port number.
2. HART Transmitter has power.
3. If multi drop configuration, all HART transmitters in the loop have unique addresses.
4. HM-USB-PWR USB connector seated firmly in PC USB connector.
5. HM-USB-PWR HART connector seated firmly on the device.
Warranty
The HM-USB-PWR is warranted for 1 year for materials and workmanship. Contact
Support at ProComSol, Ltd if having trouble. An RMA (Return Material Authorization)
number obtained from ProComSol, Ltd is required on all returned items.
