RELAY DRIVER
56
7.0 Troubleshooting FAQs
Q
The Relay Driver does not appear to be working. No LEDs are lit.
Whats wrong?
A
Check the Relay Driver power connection. The Relay Driver requires
at least 8V to operate.
Q
After the Relay Driver is programmed, all the LEDs flash red. Is
something wrong?
A
No. The red flashing LEDs indicate that the program memory has
been updated. The Relay Driver must be reset by removing power for a
few seconds. Reconnect power and verify correct start-up.
Q
Are there any fuses or user-serviceable parts inside the Relay
Driver?
A
No. The Relay Driver has electronic protections and there are no
adjustments or serviceable parts inside.
Q
The Relay Driver and PC are not communicating over the serial port.
What’s wrong?
A
Make sure that the Relay Driver is powered with a battery or power
supply. The Relay Driver cannot communicate without power. Verify
that no other programs or managers are using the same serial port.
Check the serial cable. If possible, try another cable. Verify that the
serial cable is not a Null Modem or cross-over cable.(if using a cable
other than the one supplied). Shut down and restart the PC. Reattempt
connection. Try another PC
Q
The channel(s) are not turning on/off when they should.
A
Check the control variable value with an external meter if possible
(voltage and current values). Check the Meter Bus cables and
Summary of Contents for RelayDriver
Page 9: ......
