Chentronics iScan 3 Manual page 12

TOLERANCE NOTES
FABRICATED TOLERANCES
≥ 2 ft (610 mm) ± 0.250 in (6.4 mm)
< 2ft (610 mm) ± 0.125 in (3.2 mm)
MACHINED TOLERANCES
± 0.050 DECIMAL DIM (1 PLACE)
± 0.010 DECIMAL DIM (2 PLACES)
± 0.005 DECIMAL DIM (3 PLACES)
must be rated for a minimum of 50 volts and 10 Amps. To achieve higher relay contact
voltages, use iScan®3 Flame Scanner relay contacts to energize the coil of an interstitial relay.
The 24 VDC return, "DC (-)," shall be used as the low side of the File Select relays.
Note 3
The 24 VDC return, "DC (-)," is the return for the 4–20 mA output loop(s). Input must be
Note 4
isolated type. The maximum current loop resistance is 750 ohms.
Connect the scanner Earth GND (Green/Yellow, 8, <H>) to EARTH GROUND. A short-BRAIDED
Note 5
CONDUCTOR (alternately a short AWG #12 wire) is recommended.
All shields are tied to Earth Ground in the Control Panel only.
Note 6
Earth GND
Located at CONTROL PANEL
RELATED DOCUMENT – MUST COMPLY WITH SCHEDULE DOCUMENT(S):
FOR A LIST OF RELEVANT PATENTS
AND TRADEMARKS PLEASE SEE
CHENTRONICS.COM/LEGAL-NOTICES
ISO 9001 CERTIFIED
DRAWN BY:
ON:
2021-MAY-14
AR
LAST REV BY:
ON:
2022-AUG-01
AR
MNL-ISCAN3
Earth Ground
iScan®3 MANUAL
DCO No
.
14724
DWG. No.
CONNECT ALL SHIELDS AT ONE END ONLY TO EARTH GROUND.
DO NOT GROUND SHIELDS AT THE LOCAL JUNCTION BOX.
Figure 4: Earthing instructions
CERT-iS3 MNL, CDM-10000105, 106, 107, 108, 109, 110,
MNL-ISCAN3
THIS DRAWING OWNED
CONDITIONALLY LOANED AND IS TO BE RETURNED UPON
REQUEST. THE BORROWER BY RECEIVING IT HAS AGREED
NOT TO REPRODUCE NOR COPY IT IN WHOLE OR IN PART NOR
TO FURNISH INFORMATION FROM IT TO OTHERS NOR TO
MAKE ANY USE OF IT THAT IS OR MAY BE INJURIOUS TO
CHENTRONICS. FOR MORE INFORMATION, PLEASE CONTACT
CHENTRONICS AT +1.607.334.5531.
ALL OTHER CONNECTIONS
GREEN/YELLOW (8) <H> CONNECT TO EARTH
GROUND. (See section on grounding methods)
113, 119, 167, 188, 191, 192
F
REV.
BY CHENTRONICS. IT IS
PAGE 12 OF 22