Alpha Technologies FlexNet MPS48-12M - Technical Manual - Manual (Page 29)

29 021-514-B2-001, Rev. A
7.0 Troubleshooting
7.1 Troubleshooting Table
Troubleshooting Table
Fault Corrective Action
Green LED is blinking after
initial startup: Verify AC power is ON. Check voltage at AC input block. Check
AC input connector on power module.
Red LED is ON solid: Replace batteries.
Red LED is blinking. If no batteries are missing, check battery connections. Check
battery string connector on power module.
Both red and green LEDs are
blinking: Possible overload condition. Check auxiliary power connection
on radio unit, and verify load.
Low battery runtime in cold
weather: Verify the battery heater mat is warming. Use compressed air to
lower temperature. Heater should come on at 32°F (0°C). Check
battery heater mat connection. If battery heater mat fails to come
on, replace it.
Battery heater mat does not
heat: Verify the ambient temperature below 32º. Verify the voltage
input rating on the battery heater mat matches the input voltage
select switch. Units set to 115V will not heat battery heater mats
rated for 240V. Units set to 230V will damage battery heater mats
rated for 120V input.
Power module fails to come on
after applying incorrect voltage: Check the input voltage select switch. The power module can
be damaged by applying 230Vac to the unit when the input
voltage select switch is set to 115Vac. If the power module fails to
function after this fault, it must be replaced.
No power to the customer
connections (radio): Verify the Radio and Power connector are properly connected.
7.2 Accessing the Local Craft Port
Connect to the Local Craft Port using a laptop computer to view alarms sent to the radio from
the MPS48-12M. The MPS48-12M sends data to the radio once every three minutes under
normal conditions, and once every 30 seconds under alarm conditions. The table below
lists alarm parameters. Refer to the applicable documentation for interface protocols and
necessary equipment.
Alarms
Input Voltage +/- 6V
Output Voltage +/- 100mV
Output Power +/- 100mW
Battery Voltage +/- 100mV
Battery Temperature +/- 1ºC
Battery Current +/- 100mA
Battery Capacity Remaining Percent Remaining