Hardware reference guide

Intrinsically Safe Modules
444
35013379 02 October 2007
The following is a UL certified wiring diagram for this module when configured with
an RTD/resistor 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
Chassis
Ground
HAZARDOUS LOCATION
Class 1, Division 1
GROUP A, B, C, D
(SEE NOTE 1)
(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 2. Pins marked “N/C” (Not
Connected) are not electronically
connected to the module.
Note 3. Only Quantum
140 XBP 0X 00 backplanes should
be used for mounting this module along
4 Wire RTD/Resistor
Connection
2 Wire RTD/Resistor
Connection
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 uH
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
oc
< V
max
satisfy the following conditions:
N/C N/C
N/C N/C
N/C N/C
N/C N/C
3 Wire RTD/Resistor
Connection
with the following UL listed modules:
140 CPU xxx xx
140 CPS xxx xx
for Ccable and Lcable:
Capacitance 60 Pf/ft
Inductance 0.20 uH/ft
31001362 Rev 00 140 AII 330 00 RTD Wiring Diagram
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com