Hardware reference guide
Intrinsically Safe Modules
35013379 02 October 2007 467
The following is a UL certified wiring diagram for this module.
Input 1 (+)
N/C
Input 1(-)
Input 2 (+)
N/C
Input 3 (+)
N/C
Input 4 (+)
N/C
N/C N/C
N/C N/C
N/C N/C
Input 5 (+)
Input 5 (-)
N/C
Input 6 (+)
Input 6 (-)
N/C
Input 7 (+)
Input 7 (-)
N/C
Input 8 (+)
Input 8 (-)
N/C
N/C
I.S. Module
Blue Terminal Strip
Chassis
Ground
HAZARDOUS LOCATION
CLASS 1, DIVISION 1
GROUP A, B, C, D
(SEE NOTE 1)
I.S. Field
NON-HAZARDOUS LOCATION
Note 1. Only shielded cables
should be used for connections.
Shields should be left open at
the field end and connected to
chassis ground at the ground
Note 2. Pins marked “N/C” (Not
Connected) are not electronically
screws on the backplane.
connected to the module.
Note 3. Only Quantum
140 XBP 0X 00 backplanes
should be used for mounting
this module along with the
Notes related to
UL certification
for this module.
Note 1. Entity parameters per
channel: V
oc
= 9.5 V
I
sc
= 80 mA
C
a
= 450 nf
L
a
= 0.175 mH
Note 2. Maximum non-
hazardous area voltage must
not exceed 250 V.
Note 4. Install in accordance
with the NEC (ANSI/NFPA 70)
and ANSI/ISA RP 12.6 for
installation in the United States.
Note 5. To maintain intrinsic
safety, shield for each cable
must be grounded and must
extend as close to the terminals
as possible.
Note 6. Intrinsically Safe (I.S.)
cables of one module must be
routed separately from I.S.
cables of another module.
Note 7. I.S. devices when
connected to I.S. terminals must
satisfy the following conditions:
V
oc
< V
max
I
sc
< I
max
C
a
> C
i +
C
cable
L
a
> L
i +
L
cable
Input 2 (-)
N/C
Input 3 (-)
Input 4 (-)
following UL listed modules:
140 CPU xxx xx
140 CPS xxx xx
Note 3. If the electrical
parameters of the cable are
unknown, the following values
must be used for Ccable and
Lcable:
Capactance 60 Pf/ft
Inductance 0.20 uH/ft
Device
I.S. +8 Vdc
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
DII 330 00
140DII33000 Wiring Diagram31001365 Rev 00
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com