70
Troubleshooting
Fuse Testing
The din rail double fuse holder for VRI-iS in the con-
trol panel and power supply tower box contains two
time delay fuses rated at 1.25 Amp 600 volts AC.
With power off open the fuse block to expose the
fuses. See Figure 70-1.
Test the continuity of each fuse with a multimeter set
to ohms.
Power Supply Testing
With the control panel main disconnect ON, the pow-
er ON light should be illuminated. See Figure 70-2.
If the power ON light is illuminated, test for approxi-
mately 28.0 volts DC between power supply termi-
nals +V and -V.
• If DC voltage is present but not correct, adjust the
voltage by turning the adjustment screw.
• If DC voltage is not present or cannot be adjusted,
replace the power supply.
If the power ON light is NOT illuminated, test for line
voltage (380-480 volts AC) between power supply
terminals L1 and L2.
• If 480 VAC line voltage is present, replace the
power supply.
• If 480 VAC line voltage is not present between
terminals, check wiring to power supply and test
components.
1
2
Figure 70-1 1. Double Fuse Holder
2. Fuse
DRAWN
ECN NO.
ECN DATE
DESCRIPTION
PART NAME:
PART NO.:
DESIGN
AUTHORIZE
28800 Ida Street Valley, Nebraska 68064-0358
REV.
SCALE:
SOFTWARE: PTC
SHEET:
REF:
DATE:
R
THIRD ANGLE
(4.22 )
[107,1]
(3.27 )
[83,0]
MAM
MAM
JWB
ELC MS PULS 24V 3.75A TWO PHASE POWER SUPPLY
03E3764
1 of 1
1.000
05-06-14
0
30326
08-08-14
NEW PART. JWB/MAM
.010 [0,25]
OTHER HOLES:
+ .010 [0,25] / - .002 [0,05]
DRILLED HOLES:
1
ANGULAR DIMENSIONS:
.06 [1,5]
LINEAR DIMENSIONS:
TOLERANCE UNLESS OTHERWISE SPECIFIED:
DIMENSIONS IN BRACKETS [X,XX] ARE MILLIMETERS
MANUFACTURER: PULS
MANUFACTURER NUMBER: ML90.200
2
5
8
1
4
7
3
6
Figure 70-2 1. Power Supply
2. Power ON Light
3. +VDC Output
4. -VDC Output
5. Adjustment Screw
6. L1 VAC Input
7. L2 VAC Input
8. Ground
Summary of Contents for VRI-iS
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Page 44: ...This page was left blank intentionally 44 Setup...
Page 50: ...50 Field Install and Wiring Diagrams VRI iS Power Supply Tower Box Field Install pn 9312421...
Page 51: ...51 Field Install and Wiring Diagrams VRI iS Power Supply Tower Box Wiring Schematic pn 0999334...
Page 52: ...52 Field Install and Wiring Diagrams VRI iS GPS Position Tower Box Field Install pn 9312419...
Page 53: ...53 Field Install and Wiring Diagrams VRI iS GPS Position Tower Box Wiring Schematic pn 0999346...
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