GREER Company MicroGuard MG510, Инструкция по установке, калибровке и устранению неисправностей

Страница: 74 / 76

74
W450769A 01/14
3.9.1 Checking the Swing Sensor Drive Voltage
1. Remove the collector ring cover to expose the swing sensor.
2. With the system power turned on, measure the voltage between Terminal 1 of the swing sensor
and crane ground. The voltage should be between 4.4 and 4.8 volts.
3. Measure the voltage between Terminal 3 of the swing sensor and crane ground. The voltage
should be between 0.2 and 0.5 volts.
NOTE: Voltages outside of those shown in steps 2 and 3 indicate a problem with the swing sensor or
cabling connections. If voltages are incorrect, proceed to SECTION 3.10.3 CHECKING THE SWING
SENSOR RESISTANCE.
3.9.2 Checking the Swing Sensor Output Voltage
1. Remove the collector ring cover to expose the swing sensor.
2. With the system power turned on, measure the voltage between Terminal 2 of the swing sensor
and crane ground. The voltage should be between 0.2 and 4.8 volts.
3. Measure the voltage between Terminal 4 of the swing sensor and crane ground. The voltage
should be between 0.2 and 4.8 volts.
NOTE: Voltages outside of those shown in Steps 2 and 3 indicate a problem with the swing sensor or
cabling connections. If voltages are incorrect, proceed to SECTION 3.10.3 CHECKING THE SWING
SENSOR RESISTANCE.
3.9.3 Checking the Swing Sensor Resistance
1. Disconnect the connector (behind the collector ring).
2. Measure the resistance between pins C and D of the connector on the swing sensor side. The
resistance should be between 2200 and 2800 ohms.
3. Measure the resistance between pins A and B of the connector on the swing sensor side. The
resistance should be between 1800 and 2300 ohms.
NOTE: Resistances outside of those shown in steps 2 and 3 indicate a problem with the swing sensor
or associated cable connections. If resistances are incorrect, replace the swing sensor and its cable
.
3.9.4 Swing Sensor Setup and Checks
Use the following procedures to check or setup the Swing Sensor. Only two setup operations are
required (Zero and Direction). The swing sensor does not require span calibration to operate. Span is
automatically calculated by the computer.
The 0° angle of the upper structure should be set with the boom over the front RT’s and over the rear
for Truck Mounts. Before continuing, ensure the upper structure is correctly positioned and the house-
lock is engaged.