Testing The Power Supply - Ametek Drexelbrook IntelliPoint RF RNL Series Installation And Operating Instructions Manual

RNLXX1 - IntelliPoint RF Series User's Manual
4.8 Testing the Remote Cable (Continued)
4.9

Testing the Power Supply

OHMMETER
0
OHMMETER
0
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 2.8
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 4-6
Sensing Element
Circuits Side
Figure 4-6
Testing Power Supply
28
CENTER - GROUND
CENTER - SHIELD
SHIELD - GROUND
CORRECT READING = OPEN CIRCUIT
CHECK FOR SHORTS
"0"
CENTER - GROUND
"0"
CENTER - SHIELD
"0"
SHIELD - GROUND
SHORTED WIRES SHOULD READ 0 OHMS
CHECK FOR CONTINUITY
Figure 4-5
Testing Remote Cable
OHMS
OHMS
OHMS
NO CONNECTION
OHMS
OHMS
OHMS
SHORT OUT
TWO CONDUCTORS
Power Supply Voltages
data
NC
- 5
NC
Common
+ 5