System Sensor 2251EIS Installation And Maintenance Instructions Manual page 6

Figure 2. System wiring diagram:
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FROM PANEL OR
(+)
PREVIOUS DEVICE
CONNECT MODULES TO LISTED COMPATIBLE
CONTROL PANELS ONLY
NOTE:
1. Any single channel shunt zener diode safety barrier, or single channel of a dual channel shunt zener diode safety bar-
rier certified by BASEEFA or any EEC approved certification body to [EEx ia] IIC having the following, output param-
eters may be used:
In any safety barrier used, the output current must be limited by an internal resistor "R", such that Imax: out = U
2. It is recommended that all installation wires be shielded and properly grounded.
System Sensor warrants its enclosed translator to be free from defects in
materials and workmanship under normal use and service for a period of
three years from date of manufacture. System Sensor makes no other ex-
press warranty for this translator. No agent, representative, dealer, or em-
ployee of the Company has the authority to increase or alter the
obligations or limitations of this Warranty. The Company's obligation of
this Warranty shall be limited to the repair or replacement of any part of
the translator which is found to be defective in materials or workmanship
under normal use and service during the three year period commencing
with the date of manufacture. After phoning System Sensor's toll free
number 800-SENSOR2 (736-7672) for a Return Authorization number,
send defective units postage prepaid to: System Sensor, Repair Depart-
IST200-01-00
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(+)
COMMUNICATION LINE
ALL WIRING SHOWN IS SUPERVISED AND POWER LIMITED
Imax: out = 93.3 mA
Wmax: out = 0.66 W
Three-Year Limited Warranty
SAFE AREA
(+)9
1 (–) (–)8
2 (+)
7
6
Uz = 28V
ment, RA #__________, 3825 Ohio Avenue, St. Charles, IL 60174. Please
include a note describing the malfunction and suspected cause of failure.
The Company shall not be obligated to repair or replace units which are
found to be defective because of damage, unreasonable use, modifica-
tions, or alterations occurring after the date of manufacture. In no case
shall the Company be liable for any consequential or incidental damages
for breach of this or any other Warranty, expressed or implied whatsoever,
even if the loss or damage is caused by the Company's negligence or fault.
Some states do not allow the exclusion or limitation of incidental or conse-
quential damages, so the above limitation or exclusion may not apply to
you. This Warranty gives you specific legal rights, and you may also have
other rights which vary from state to state.
2
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TO NEXT
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DEVICE
HAZARDOUS AREA
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© System Sensor 1999
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A78-2280-16
/R.
z
I56-1182-03