E/W Limits Problem

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Phoxx

SatelliteGuys Family
Original poster
Feb 1, 2010
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The Land Of Corn!
I'm having a problem setting the East limit. I did a MR, then set limits, moved the dish across the arc from end to end and set the West then the East limit, have a 24" arm on a 10' Unimesh.

Then, when I go to set the sats I can't get the dish to W3(87W). I get a "You've Reach The East Limit" message. There is still plenty of travel left on the actuator arm??? Does the DSR922 have a certain number of clicks it allows between limits?? Since I have a good view of the Clark Belt I set the West limit past W8 (130W), and the East limit to around 60W. Did another MR just to be sure I followed the procedure correctly. I'm out of ideas.

Any suggestions??:confused:
 
Sounds like there may be a mechanical or electrical problem in the actuator.

Here's how to troubleshoot:

*************************
MOTOR VOLTAGE
(1) Unplug your IRD/Receiver/Actuator Control from the electrical
outlet and remove all cabling. Place the unit where it can easily
be worked on and connect the video out to a monitor, if the unit
has on-screen graphics.
(2) Plug the unit back into the AC
(3) Take your volt meter and set it at the 100 Volts DC.
(4) Place your meter probes on the screws or in the spring loaded
terminals of the Motor Control. It could be labeled: Motor; MTR;
M1 & M2, etc.
(5) Initiate your dish to move...you should hear the relay within the unit
make a "click" noise. Likely you will hear two clicks, the first would
be the relay, and the 2nd would be the unit shutting down to deliver an
"actuator error" reading.
(6) At the first "click", your meter should read +36 VDC. Your meter
should drop to 0 at the second "click".
(7) If you heard the "Clicks" but there was no voltage displayed on your
meter, check the fuse or the circuit breaker & retest.
(8) If when the test is performed again, you still have no voltage, you
have a problem within your unit.

TESTING ACTUATOR SYSTEMS

SENSOR VOLTAGE
(1) Follow the first two steps outlined in the MOTOR VOLTAGE testing.
(2) Take your volt meter and set it at the 10 Volts DC.
(3) Place your meter probes on the screws or in the spring loaded
terminals of the Actuator sensor & ground. It could be labeled:
Pulse & GND, Sensor & Gnd, ETC.
(4) The meter should read between 6 & 8 VDC, typically. Your receiver,
IRD, actuator control is not functioning properly if your readings are
not in this range.

COUNTING CIRCUIT
PROCEDURE A
(1) Follow the first two steps outlined in the MOTOR VOLTAGE testing.
(2) Insert or connect wire at the sensor terminal
(3) Tap the wire you just connected at approximately two taps per second
against a metal surface on the unit
(4) While tapping the wire, command the unit to move the dish
(Make sure you are tapping the wire PRIOR to commanding the unit to
move.)
(5) Your counting signifier should change on the panel of the unit or
on the monitor screen as you are simulating a working sensor.
(6) If your counting signifier does not change, try Procedure B before
shipping the unit in for repair.

PROCEDURE B
(1) Follow the first two steps outlined in the MOTOR VOLTAGE.
(2) Insert a working sensor from a tested actuator motor. Place one
lead on the sensor or pulse terminal. Place the other lead on the
GND terminal.
(3) With the sensor connected, command the unit to move the dish
(4) Your counting signifier should change on the panel of the unit or
on the monitor screen as you are using a working sensor.
(5) If your counting signifier does not change, try Procedure C before
shipping the unit in for repair.

PROCEDURE C
(1) Follow the first two steps outlined in the MOTOR VOLTAGE.
(2) Take a working actuator arm or a working actuator motor and by using
jumper wires, connect it directly to your receiver/IRD/actuator.
(3) Connect both motor wires (typically larger gauge than sensor wires)
& connect the sensor wires to pulse or sensor and ground.
(4) Command the unit to move the dish
(5) Your counting signifier should change on the panel of the unit or
on the actuator monitor screen and the motor should be running.
If your actuator motor is still attached to the telescoping shaft,
it should be moving. Try both East and West movement commands.
(6) If your counting signifier does not change, and the motor does not run,
you will need to likely send the unit in for repair.
(7) If the motor runs but the shaft (if connected to motor) does not move,
you have a problem with your actuator arm and probably not the unit
itself.

*********************

One last thing Im adding if the battery charger don't move the dish at the dish, either the motor is froze or brushes are shot.
 
Thanks for the detailed info, TVPro.

I did check the voltage out put for the motor, it's at 36V. Also check the voltage for sensor, it was a bit above 6V, so OK. The counting circuit is counting fine. Then, checked the actuator's reed sensor, it seems to be counting OK, don't have another unit to check against this result, so I'm not really double checking this function, don't have the equipment. So, this is about the same test as "Procedure C" as the arm screw moves in and out smoothly through the entire stroke, its a 24" Von Weise.

I'm going to try to borrow another actuator from a friend, but he is out of town until Wednesday. Then I can do some further checking. I'll keep you posted.
 
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Official Letter

Anyone with a 905 up to testing something?

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