Dwyer VPI User Manual
Series VPI Valve Position Indicator
W4
W3
L1
L2
3-27/32
[97.5]
1-61/64
[49.8]
2-25/32
[70.8]
3-51/64
[96.5]
1/2 NPT
4-3/4
[120.5]
BRACKET
H
Specifications - Installation and Operating Instructions
Bracket Dimensions
Model
VPI-B01
VPI-B02
VPI-B03
VPI-B04
H in (mm)
1-13/64 [30.5]
1-19/64 [40.5]
1-19/64 [40.5]
2-3/8 [60.5]
L1 in (mm)
3-5/32 [80]
5-1/8 [130]
L2 in (mm)
3-15/16 [100]
5-29/32 [150]
W3 in (mm)
1-3/16 [30]
Bulletin V-37
W4 in (mm)
2 [50]
The Series VPI Rotary Valve Position Indicators are compact
yet rugged for confined and severe locations. These versatile units
offer visual position indication as well as two internal limit switches. The spring-loaded splined cams require no tools for a quick
and precise adjustment. The Series VPI is available with mechanical or proximity limit switches. The mechanical models feature two
SPDT limit switches. The proximity models feature two solid-state
inductive limit switches eliminating the need for the cams to make
contact with the switches. The NEMA 6 (IP67) rating ensures protection against the ingress of liquid and debris.
ASSEMBLY
INDICATOR COVER
INDICATOR
BASE COVER
MAIN SHAFT
ASSEMBLY
MECHANICAL SWITCH
ASSEMBLY
TERMINAL
SPECIFICATIONS
Minimum Rotation Travel: 60°.
Maximum Rotation Travel: 360°.
Temperature Limits: -4 to 176°F (-20 to 80°C).
Switch Type: VPI-M: (2) mechanical SPDT limit switches; VPI-
P: (2) Inductive proximity limit switches.
Electrical Rating: VPI-M: AC: 3A at 250 V, 5A at 125 V; DC:
0.2A at 250 V, 0.4A at 125 V, 4A at 30 V.
Power Requirements: VPI-P: 12 to 24 VDC, 30 VDC
maximum.
Enclosure Material: Aluminum die-casting.
Electrical Connections: 8-contact screw terminal strip.
Conduit Connection: (2) 1/2˝ female NPT.
Enclosure Rating: NEMA 6 (IP67).
Mounting: NAMUR.
Weight: 1.9 lb (0.88 kg).
BASE BODY
EXPLOSION
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A. Fax: 219/872-9057 e-mail: info@dwyer-inst.com
Phone: 219/879-8000 www.dwyer-inst.com
INSTALLATION
BRACKET
BRACKET
ACTUATOR
INSTALLATION
4X M6 BOLT
4X M5 BOLT
4X M6 SPRING
WASHER
4X M5 SPRING
WASHER
ADJUSTMENT
Safety Warning
• VPI Series is designed for non-explosion use. The VPI
should not be installed in explosives areas.
• All input and supply pressure to valve, actuator, and
other related devices must be turned off when installing.
VPI Installation
Installation Steps
1. Assemble limit switch body with the bracket.
2. Align main shaft of the limit switch box and the stem of the
actuator. After the alignment, tighten the bracket onto the
actuator.
Adjustment - Upper Switch
Push down upper switch and turn right or left for switch adjustment.
ADJUSTMENT-UPPER SWITCH
MICRO SWITCH
CAM
Adjustment - Lower Switch
Pull up lower switch and turn right or left for switch adjustment.
WIRING
Connection - Power
TOP SWITCH
BOTTOM
SWITCH
MECHANICAL TYPE <2 SPDT>
CAM
NC
NO
C
TOP
SWITCH
BOTTOM
SWITCH
NC
C
NO
SOLENOID
VALVE
BROWN
BLACK
BLUE
BROWN
BLACK
BLUE
SOLENOID
VALVE
RED
BLACK
BLUE
YELLOW
WHITE
BROWN
CONNECTOR
CLOSE OPEN EXT
CLOSE OPEN EXT
1
2
3
4
5
6
7
8
GROUND
1
2
LOAD
3
4
5
LOAD
6
7
8
GROUND
ADJUSTMENT-LOWER SWITCH
MICRO SWITCH
CAM
MAINTENANCE
Upon final installation of the Series VPI Valve Position Indicator,
no routine maintenance is required. A periodic check of system
calibration is recommended. The Series VPI is not field
serviceable and should be returned if repair is needed (field
repair should not be attempted and may void warranty). Be sure
to include a brief description of the problem plus any relevant
application notes. Contact customer service to receive a return
goods authorization number before shipping.
©Copyright 2010 Dwyer Instruments, Inc. Printed in U.S.A. 6/10 FR# R4-443655-00
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A. Fax: 219/872-9057 e-mail: info@dwyer-inst.com
PROXIMITY TYPE <NPN SENSOR>
Phone: 219/879-8000 www.dwyer-inst.com
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