Hardware reference guide

Intrinsically Safe Modules
35013379 02 October 2007 451
The following is a UL 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
CLASS I, DIVISION I
GROUP A, B, C, D
(SEE NOTE 1)
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
I.S. + 14.5 Vdc
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 4. Pins marked “N/C” (Not
Connected) are not electronically
connected to the module.
Note 5. Only Quantum
140 XBP 0X 00 backplanes should
be used for mounting this module along
Notes related to
UL certification
for this module.
Note 1. Entity parameters per
channel: V
cc
= 24.3 V
I
sc
= 112 mA
C
a
= 127 nf
L
a
= 1.5 mH
Note 2. Maximum non-
hazardous area voltage must
not exceed 250 V.
Note 3. If the electrical parameters
of the cable are unknown, the
following values must be used
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
L
a
> L
i
+ L
cable
C
a
> C
i
+ C
cable
I
sc
< I
max
V
cc
< V
max
satisfy the following conditions:
Note 2. A dropping resistor of 100
Ohms is across the Signal and V
with the following UL listed modules:
140 CPU xxx xx
140 CPS xxx xx
for Ccable and Lcable:
Capacitance 60Pf/ft
Inductance 0.20 uH/ft
(-) pins of each channel. V (-) is
internally connected to I.S. ground.
Note 3. Three Wire Transmitters
should be provided power only
from the module. An external
power supply should not be used.
(See Note 2)
31001363 Rev 00 140 AII 330 10 Wiring Diagram
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com