Bently Nevada 3300/20, Operation Manual

Page: 68 / 93

Dual Thrust Monitor Maintenance
80179-01
• 1-3-21 FIELD WIRING DIAGRAMS [CONT.)
L'H•I'INEL A
RECORDER
OCR I/O C a ) SAWS
NA
3 '•
WO/ FILIT OUPIE
%el
I
4
3 , C
TO CHANNEL B
.--7E:ORDER
DANGER
— R E L AY
CONTACTS
SIGNAL ; " N U T Ri7LAY
MODULE
7
•=1"....CMI7CR
-
a. ,
WIRING RECOMMENDATIONS:
SIGNAL MODULE TO BARRIER— BARR'ER TO PROXIMITOR• 1 4 — T O 18—
.AWG SOLID OR STRANDED, 3 WIRE SHIELDED WITH INSULATING SHEATH
SIGNAL MODULE TO RECORDER/READOUT: 18— TO 22— AWG
SOLID OR STRANDED, 2 —WIRE SHIELDED WITH INSULATING SHEA
•
\ SHIELDS ARE JOINED A S SHOWN TERMINATING A T BARRIER ;GROUND, S H I E L D S SHOULD
BE INSULATED.
USE MTL SAFETY BARRIER PER DWG B A 2 2 0 0 0 , NOTI7 1 7 .
/ 4 \ BARRIERS ARE MOUNTED TO BARRIER RAIL. B A R R I E R RAIL 5 THE SYS 'FM GROUND
AND I S USED T O TERMINATE THE POTENTIAL EQUALIZATION BUS. T O T A L EARTH
LOOP IMPEDANCE MUST NOT EXCEED 1 OHM.
P R O X I M I T O R CASE MUST B E ELECTRICALLY ISOLATED FROM EARTH GROUND. E L E C —
TRICAL ISOLATION: 5 0 0 VA C (RMS) MIN. ISOLATION K I T PART NO. 1 9 0 9 4 - 0 1
MAY BE USED T O SATISFY THE ISOLATION REQUIREMENT.
T O ELECTRICALLY ISOLATE AND PROTECT COAXIAL CONNECTIONS, USE CONNECTOR
PROTECTOT KIT PA RT NO. 4 0 11 3 - 0 2 .
,/‘'\ MAXIMUM CABLE LENGTH BETWEEN BARRIER A N D PROXIMITOR MU z.T NOT EXCEED
1000 FEET ( 3 0 0 METRES).
/IP\ T O MINIMIZE GROUND LOOP NOISE PROBLEMS, A SINGLE POINT EARTH GROUND
( GND) T O SYSTEM COMMON ( C O M ) CONNECTION I S RECOMMENDED.
/ \ RECORDER SHIELDS TERMINATE AT RACK SIGNAL COMMON.
10. BARRIERS LOCATED I N DIVISION 2 OR ZONE 2 HAZARDOUS AREAS MUST BE IN—
STALLED I N NEMA 4 OR I P 5 4 OR APPROVED PROTECTIVE HOUSING.
41111 1 1 . MONITORS MUST BE RE—CALIBRATED WITH BARRIERS IN THE LINES.
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