Troubleshooting - Maretron RAA100 User Manual

5 Troubleshooting

If you notice unexpected operation of the Maretron RAA100, follow the troubleshooting
procedures in this section to remedy simple problems.
Symptom
No rudder angle 1. If operating in the NMEA 2000
output
2. If operating in the NMEA 2000
3. Ensure that power is supplied to the NMEA 2000
4. Ensure that both trunk line terminators are in place. Proper network
Inaccurate 1. Remember, the accuracy of most analog gauges/resistive rudder
rudder angle
output
2. If using a standard resistive rudder angle sender (American standard
3. If using a standard resistive rudder angle sender (i.e., American or
4. If using custom calibration, re-calibrate the RAA100 (see Section
5. If operating in the NMEA 2000
Revision 1.0
www.busse-yachtshop.de | info@busse-yachtshop.de
Troubleshooting Procedure
®
NMEA 2000 interface (see Section 2.3.2) and/or the connection to the
resistive rudder angle sender (see Section 2.3.1.2) and tighten if
necessary.
connections to the NMEA 2000
the connection to the analog gauge (see Section 2.3.1.1) and tighten if
necessary.
network power can be checked by measuring the voltage at an open
tee between NET-S and NET-C. The voltage should be between 9 and
16 volts.
termination can be checked by removing network power and
measuring the resistance at an open tee between NET-L and NET-H
signals. The resistance should read approximately 60 ohms (two 120
ohm terminators in parallel equals 60 ohms).
angle senders is at best plus or minus 10%. The inaccuracies are due
to both the analog gauge and the resistive rudder angle senders.
Although the RAA100 is a precision instrument, it is only as good as
the resistive sender, which may not be as accurate as you like. Avoid
low cost resistive rudder angle senders if you desire good accuracy.
240-30 ohm, European standard 10-180 ohms), make sure you have
correctly configured the RAA100 for the appropriate standard (see
Section 3.3.1). If you use the standard setting, the maximum angles
for the rudder must be 45°. If the maximum rudder angle is other than
45°. You must use custom calibration.
European), you may want to consider custom calibration (see Section
3.3.2). The standard sensor values assume that you're the rudder is at
45° port and starboard at the end of its travel Custom calibration will
use actual minimum and maximum resistive values and allow you to
program the maximum port and starboard angles instead of assuming
that the rudder angle is at 45° at the standard resistive extremes.
3.3.2).
analog gauge resistive values have been configured or programmed
into the RAA100 (see Section 3.2.1)
®
Mode, check the connections to the
®
/ Analog Gauge Mode, then check the
®
interface (see Section 2.3.2) and/or
®
network. Proper
®
/ Analog Gauge Mode, ensure correct
® ®
Page 9