Hardware reference guide
Intrinsically Safe Modules
35013379 02 October 2007 449
The following is a CSA certified wiring diagram for this module.
V1 (-) V1 (+)
N/C
Signal 1
N/C
Signal 2
N/C N/C
V3 (-) V3 (+)
N/C
Signal 3
N/C
Signal 4
N/C N/C
V5 (-) V5 (+)
N/C Signal 5
N/C
Signal 6
N/C N/C
V7 (-) V7 (+)
N/C Signal 7
N/C
Signal 8
N/C N/C
NON-HAZARDOUS LOCATION
HAZARDOUS LOCATION
ZONE 1
GROUP IIA, IIB, IIC
(SEE NOTE 1)
Note 1. Only shielded twisted pair
cables should be used for
connections. Shields should be
left open at the field end and
connected to chassis ground at the
ground screws on the backplane.
Note 2. A dropping resistor 100
Ohms is across the signal and V(-)
Note 3. Three wire transmitters
should be provided power only
from the module. An external
I.S. Module AII 330 10
Blue Terminal Strip
V2 (-) V2 (+)
V4 (-) V4 (+)
V6 (-) V6 (+)
V8 (-) V8 (+)
(SEE NOTE 1)
I.S. 3 wire
transmitter
I.S. 2 wire
transmitter
pins of each channel. V(-) is
internally connected to I.S. ground.
power supply should not be used.
Note 4. Pins marked “N/C” (Not
Connected) are not electronically
connected to the module.
I.S. + 14.5 Vdc
(See Note 2)
Chassis
Ground
(See Note 1)
Chassis
Ground
(See Note 1)
Note 5. Only Quantum
140 XBP 0X 00 backplanes
should be used for mounting this
module.
Notes related to
CSA certification
for this module.
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 7. I.S. devices when
connected to I.S. termi-
nals must satisfy the fol-
lowing conditions:
V
oc
< V
max
I
sc
< I
max
C
a > Ci
+ C
cable
L
a > Li
+ L
cable
31001363 Rev 00 140 AII 330 10 Wiring Diagram
Note 8. This module is
certified as a component
for mounting in a suitable
enclosure where the suit-
ability of the final combi-
nation is subject to
acceptance by CSA or an
inspection authority hav-
ing the jurisdiction.
Note 1. Entity
parameters per chan-
nel:
V
oc
= 23.8 V
I
sc
= 112 mA
C
a
= 127nf
Note 3. Install in
accordance with
Canadian Electrical
Code, Part I for installa-
tion in Canada.
Note 6. intrinsically
Safe (I.S.) cables of one
module must be routed
separately from I.S.
cables of another
module.
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com