4
Series 5C Valve Status Monitor
Installation, Operation and Maintenance Manual
5. Introduction
The Bray Series 5C Valve Status Monitor (VSM)
provides visual and electrical indication of position
of any VDI/VDE 3845 compliant quarter-turn device.
The S5C VSM is designed to operate in multiple
hazardous locations.
6. Principle of Operation
Bray Series 5C VSMs are comprised of a hazardous
location housing with NEMA Type 4, 4x and IP
66/67/68 (1 meter for 1 hour) ratings, external
position indicator, three conduit entries, cam shaft
with self-locking cams, elevated terminal block(s),
internal grounding screw, ATEX/IECEx required
external grounding screw, and mounting bracket.
The VSM is coupled to the quarter turn device via the
cam shaft. Rotation of the cam shaft, in turn, drives
switch activation. The angular position in which the
switches activate can be adjusted through the self-
locking cams. Mechanical or proximity activation of
switches provides electrical feedback of achieved
position through field wiring to a control network.
7. Hazardous Locations
The S5C VSM is designed and certified to operate
in the following hazardous locations:
NEC 500
Class I Division 1
Groups A, B, C & D T6
E202292
Class I Division 1
Groups B, C & D T6 (cUL only)
Class II Division 1
Groups E, F, G T85°C
ATEX II 2 G Ex db IIB + H2 T6 Gb
II 2 D Ex tb IIIC T85°C Db
IP66/67/68
DEMKO 18ATEX1951X
IECEx IECEx UL 18.0075X
8. Pre-Installation Storage
Bray Series 5C VSMs are not weatherproof until
the unit is properly installed, or all conduits and
applicable port connections are sealed off and
prepared for storage. The units may be shipped with
temporary covers to prevent foreign matter from
entering through the conduit openings; however,
the user is responsible for replacing with the proper
sealing plugs to support its NEMA/IP ratings.
To prevent condensation from forming inside the
unit, maintain a near constant external temperature
and store indoors in a well ventilated, clean, dry
room. The temperature shall be between 40°F
(4°C) and 85°F (29°C), with a relative humidity
less than 70%. Store units away from vibration
and direct sunlight exposure, and place units on a
shelf or wooden pallet in order to protect against
dampness. Keep units covered to protect against
dust and dirt; if storing for long term, placing the
unit inside a plastic sealed bag may be preferred.
Bray cannot accept responsibility for deterioration
caused on-site once the cover is removed or due
to improper storage.
NOTICE
Units are shipped with three screw-in plugs to
prevent foreign matter from entering the unit.
To prevent condensation from forming inside
these units, maintain a near constant external
temperature and store in a well-ventilated, clean,
dry room away from vibration.
Store units on a shelf or wooden pallet in order
to protect against dampness.
Keep units covered to protect against dust and dirt.
Storage temperature should be maintained
between -25°C and 65°C
9. Mounting
All Bray Series 5C VSMs are suitable for mounting
to VDI/VDE 3845 compliant quarter-turn devices
using standard mounting hardware. With proper
mounting hardware, VSMs can be installed onto
other quarter-turn devices. Mounting instructions
may vary when using alternative mounting
hardware.
9.1 Adjustable Bracket
Bray's 3 piece adjustable bracket is designed to
mount on both NAMUR 30 x 80 and 30 x 130
pads. Installation is as follows:
1. Disassemble two mounting bracket foot
plates from top plate.
a. Continue to Step 6 if the mounting
bracket top plate was pre-installed.
2. Lightly coat mounting bracket bolt threads
with grease.
3. Place lock washer onto bolts.
4. Place nylon washer in between mounting
bracket and bottom of the VSM.
5. Attach mounting bracket and nylon washers
to the VSM using mounting bracket bolts.
a. Tighten mounting bolts in a cross
pattern to 70.8 lb-in [8 N-m]
b. Ensure that the bracket remains aligned
with the body of the VSM.
