Hardware reference guide

Intrinsically Safe Modules
35013379 02 October 2007 445
The following is a UL certified wiring diagram for this module when configured with
a thermocouple connection.
I Source 1 (+) I Source 1 (-)
V Sense 1 (+) V Sense 1 (-)
I Source 2 (+) I Source 2 (-)
V Sense 2 (+) V Sense 2 (-)
I Source 3 (+) I Source 3 (-)
V Sense 3 (+) V Sense 3 (-)
I Source 4 (+) I Source 4 (-)
V Sense 4 (+) V Sense 4 (-)
I Source 5 (+) I Source 5 (-)
V Sense 5 (+) V Sense 5 (-)
I Source 6 (+) I Source 6 (-)
V Sense 6 (+) V Sense 6 (-)
I Source 7 (+) I Source 7 (-)
V Sense 7 (+) V Sense 7 (-)
I Source 8 (+) I Source 8 (-)
V Sense 8 (+) V Sense 8 (-)
I.S. Module AII 330 00
Blue Terminal Strip
Chassis
Ground
Chassis
Ground
HAZARDOUS LOCATION
CLASS 1, DIVISION 1
GROUP A, B, C, D
(SEE NOTE 1)
(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 3. Pins marked “N/C” (Not
Connected) are not electronically
connected to the module.
NON-HAZARDOUS LOCATIONNotes related to
UL certification
for this module.
Note 1. Entity parameters per
channel: V
oc
= 15.5 V
I
sc
= 123 mA
C
a
= 0.47 uf
L
a
= 466 μH
Note 2. Maximum non-
hazardous area voltage must
not exceed 250 V.
Note 5. To maintain intrinsic
safety, shield for each cable
must be grounded and must
extend as close to the terminal
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
oc
< V
max
satisfy the following conditions:
Note 2. Thermocouple tip may
be grounded if required.
(+)
(-)
mV Source
N/C N/C
N/C N/C
N/C N/C
N/C N/C
Note 3. If the electrical
parameters of the cable are
unknown, the following values
must be used for Ccable and
Lcable:
Capacitance 60 Pf/ft
Inductance 0.20 uH/ft
Note 4. Only Quantum
140 XBP 0X 00 backplanes
should be used for mounting
this module along with the
following UL listed modules:
140 CPU xxx xx
140 CPS xxx xx
Note 4. Install in accordance
with the NEC (ANSI/NFPA 70)
and ANSI/ISA RP 12.6 for
installation in the United States.
Thermocouple
Type J, K, E, T, R, S, B
(See Note 2)
140 AII 330 00 TC Wiring Diagram31001362 Rev 00
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com