Rice Lake Load Cells - Wiring for Hazardous Environments - Manual (Page 24)

Control Drawing 66021 21
SCALE
TREA
TMENT
ANGLE 3 PLC 2 PLC
TOL.
DECIMAL
DRAWING TOLERANCES
TITLE
SHEET OF
DWG NO
THIS DRAWING AND ALL INFORMA
TION CONT
AINED HEREIN IS AND REMAINS
THE PROPER
TY OF RICE LAKE WEIGHING SYSTEMS INC. AND IS CONFIDENTIAL.
IT IS SUBMITTED AND MA
Y BE USED ONL
Y IN CONNECTION WITH RICE LAKE
WEIGHING SYSTEMS' PROPOSAL AND/OR ITS CUSTOMERS' ORDERS. IT SHALL NOT BE DISCLOSED TO OTHERS OR COPIED WITHOUT RICE LAKE WEIGHING SYSTEMS' SPECIFIC WRITTEN CONSENT AND SHALL BE IMMEDIA
TEL
Y RETURNED UPON REQUEST
.
REVISION
REVISIONS
REV
REFERENCE
INIT
DA
TE
ALL THREADS TO BE CLASS 2
UNLESS OTHER
WISE SPECIFIED
ALL DIMENSIONS APPLICABLE AFTER TREA
TMENT
UNLESS OTHER
WISE SPECIFIED
DO NOT SCALE
DRAWING
SURF
ACE
FINISH
MA
TERIAL
THIRD ANGLE PROJECTION
UNITS TO BE INCHES
FOR RL
WS
USE ONL
Y
RICE LAKE WEIGHING SYSTEMS
MFG.ENG.
DR.BY
APPROVED DES.ENG. APPROVED
CKD.
WIRING DIAGRAM -
LOAD CELLS IN HAZARDOUS AREAS
66021
1:1
19
--- --- ---
---
--- NONE
NEW
SLJ 9/15/00
ECO10664: ADDED RLHSS, RLSB250, RLSSB TO SHEETS 2, 5, 6 & 8; DELETED RL8C2P1SS FROM SHEETS 2, 5, 6 & 8; DELETED RL75060S FROM SHEET 2; RL70000A W
A S
SLJ
RL70000 ON SHEETS 7 & 9; RL75223A W
AS RL75223 ON SHEET 9; RL75016WHE W
A S
RL75016HE ON SHEETS 3 & 4; ADDED RL75016WHE TO SHEETS 7 & 9; DWG NO. W
AS 460255.
NEW
9/15/00
11. 10.
13. SEE SHEET 2 FOR NO BARRIER APPLICA
TION.
12. EACH SHEET LISTS THE LOAD CELL MODEL NUMBERS TO WHICH IT APPLIES.
BARRIER BOXES : BBX-XX SERIES. JUNCTION BOXES : EL604ST
A, EL604STR, EL604ET
A, EL210, EL211A, AND JB808.
RICE LAKE WEIGHING SYSTEMS MANUF
ACTURES JUNCTION BOXES AND BARRIER BOXES.
6. R. ST
AHL BARRIERS ARE MANUF
ACTURED A
T
150A NEW BOSTON ST
. WOBURN, MA. 01801.
8. INST
ALL PER ANSI/ISA - RP12.6.
7. SHT 6, 7, 8 & 9 REPRESENTS ST
AHL BARRIER SPECIFICA
TIONS.
9. 700 OHM BRIDGES ARE TYPICAL V
ALUES, BRIDGE RESIST
ANCE MA
Y BE = OR > 700 OHMS.
350 OHM BRIDGES ARE TYPICAL V
ALUES, BRIDGE RESIST
ANCE MA
Y BE = OR > 350 OHMS.
IN THE LOAD CELL EXCIT
A
TION CIRCUIT
.
DUE TO THE SERIES RESIST
ANCE OF THE SAFETY BARRIERS
NOTE:
1. DRAWING REVISIONS MUST BE APPROVED BY F
ACTOR
Y MUTUAL PRIOR TO RELEASE.
2. ELECTRICAL EQUIPMENT CONNECTED TO BARRIER INPUTS
SHOULD NOT USE OR GENERA
TE MORE THAN 250 VOL
TS RMS.
3. A REDUCTION OF THE LOAD CELL SIGNAL OUTPUT WILL OCCUR,
REP
. IN USA : MTL INC., 8576 WELLINGTON ROAD, MANASSAS, V
A. 22110.
5. SHT 3, 4 & 5 REPRESENTS MTL BARRIER SPECIFICA
TIONS.
4. MTL BARRIERS ARE MANUF
ACTURED IN ENGLAND;
0