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Safety IntelliPoint RF, SXRNTXX Series User's Manual
20
Figure 4-4
Testing Power Supply
Common
data
- 5
NC
NC
+ 5
Power Supply Voltages
NO CONNECTION
OHMMETER
CENTER - GROUND
CENTER - SHIELD
SHIELD - GROUND
OHMS
OHMS
OHMS
CORRECT READING = OPEN CIRCUIT
CHECK FOR SHORTS
8
0
8 8 8
Figure 4-3
Testing Remote Cable
SHORT OUT
TWO CONDUCTORS
CENTER - GROUND
CENTER - SHIELD
SHIELD - GROUND
OHMS
OHMS
OHMS
SHORTED WIRES SHOULD READ 0 OHMS
CHECK FOR CONTINUITY
8
0
"0"
"0"
"0"
OHMMETER
4.6
Testing Remote Cable
4.7
Testing Power Supply
Power supply can be tested separately as follows:
1. Remove power from electronic unit.
2. Remove three screws holding circuit board into housing.
3. Disconnect sensing element connection.
See to Section 2.7
Sensing Element Connection
.
4. Reapply power.
5. Using a DC voltmeter, measure voltage from -5 to Common
and +5 to Common. Correct readings are -5 to -6 and +5 to
+6 Vdc.
See Figure 4-4
.
Sensing Element
Circuits Side