Rice Lake IQ plus 810 XPCD User manual

67691
IQ plus
®
810 XPCD
Explosion Proof Digital Weight Indicator
Installation Manual

i
Contents
About This Manual................................................................................................................................... 1
1.0 Introduction.................................................................................................................................. 4
1.1 System Limitations and Restrictions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Front Panel Keypad and Annunciators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.0 Installation and Wiring................................................................................................................ 6
2.1 IQ plus 810 XPCD Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1.1 Mounting and Mounting Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Sealoff Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3 Cabling and Conduit Runs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3.1 Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3.2 Conduit Runs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.4 Gasketing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.5 AC Power Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.6 Intrinsic Safety Barriers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.6.1 Intrinsic Safety Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.7 Load Cell Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.8 Configuration and Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.8.1 Setpoint Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.8.2 Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.0 Appendix.................................................................................................................................... 13
3.1 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
IQ plus 810 XPCD Limited Warranty ...................................................................................................... 14
Copyright © 2001 Rice Lake Weighing Systems. All rights reserved. Printed in the United States of America.
Specifications subject to change without notice.
April 2001

ii IQ plus 810 XPCD Installation Manual

1
About This Manual
The IQ plus 810 XPCD explosion proof digital weight indicator represents the latest in state-of-the-art
microprocessor technology specifically applied to the explosion proof weighing marketplace. This IQ plus 810
has been modified for use in a hazardous electrical environment.
This manual provides information on installation of the IQ plus 810 XPCD. The installer should be familiar with
the National Electrical Code and RP 12.6 ( Recommended Practice ) requirements for installation of equipment in
hazardous areas (NEC Article 504, Intrinsically Safe Systems ) published through the Instrument Society of
America.
This equipment is intended only for industrial applications.
This instrument and accompanying equipment must be installed and serviced by an
authorized technician in accordance with the instructions provided in this manual.
Improper specification, installation, or service of this equipment could result in personal injury or property
damage.
Read all of the manual prior to installation. Do not assume that all hazardous area installations are identical.
Do not begin installation until all safety procedures are in place including lockouts, additional ventilation, or
washdowns. Make sure plant safety personnel have checked the area in which you will be working and have
officially declared it safe for work to proceed.
All explosion proof enclosures must remain closed and tightly bolted unless being serviced by qualified
personnel in an area which safety inspectors have tested and declared safe. Bolts have been provided for all
of the bolt holes on the door. Each bolt hole must have a bolt in it and the bolt tightly fastened. All other
openings have sealoff fittings or plugs provided. Each opening must have a sealoff fitting or plug correctly
installed in it. Sealoff installation is critical. Maximum voltage inside of enclosure must not exceed 250VAC.
The illustrations shown on the following pages represent a basic explosion proof flame control theory
(XPCD).
Warning

2 IQ plus 810 XPCD Installation Manual
The push buttons, rotary switches and sealing fittings are all attached to the enclosure via drilled and
tapped holes in the enclosure. Just as with the flange, all threaded operators and fittings carefully control
the flame path.
Explosion
HAZARDOUS
AREA
High Temperature
Gases
Cooling from
Conduction of Heat
along the Threads
There must be a minimum of five full
threads of engagement of a 2–A
2–B fit for a Group C enclosure.
Group B increases this to eight full
threads of engagement.
Propagation of Gas due to
Pressure from an internal
Explosion is along the
threads
Shaft Clearance
not to exceed valve
Cross–Section of a
shaft-type threaded
operator
INSIDE OF
ENCLOSURE
Lower
Temperature
Gases
Enlarged view
below