Hardware reference guide

Intrinsically Safe Modules
35013379 02 October 2007 457
The following is a UL certified wiring diagram for this module.
Output 1 (-) Monitor 1 (-)
N/C
Output 1(+)
Output 2 (-) Monitor 2 (-)
N/C
Output 3 (-) Monitor 3 (-)
N/C
Output 4 (-) Monitor 4 (-)
N/C
N/C N/C
N/C N/C
N/C N/C
Output 5 (-)
Output 5 (+)
N/C
Output 6 (-)
Output 6 (+)
N/C
Output 7 (-)
Output 7 (+)
N/C
Output 8 (-)
Output 8 (+)
N/C
N/C
I.S. Module AIO 330 00
Blue Terminal Strip
Chassis
Ground
HAZARDOUS LOCATION
CLASS 1, DIVISION 1
GROUP A, B, C, D
(SEE NOTE 1)
I.S. Field Device
R-500 OHMS Max
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 module
Note 5. Pins marked “N/C” (Not
Connected) are not electronically
end.
connected to the module.
Note 6. 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
cc
= 29.5 V
I
sc
= 93 mA
C
a
= 68 nf
L
a
= 2.0 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
cc
< V
max
I
sc
< I
max
C
a
> C
i +
C
cable
L
a
> L
i +
L
cable
Output 2 (+)
N/C
Output 3 (+)
Output 4 (+)
Monitor 5 (-)
Monitor 6 (-)
Monitor 7 (-)
Monitor 8 (-)
V
(SEE NOTE 2)
Note 2. More than one device
can be connected as long as
they have differential input and
total input resistance is less
than 500 ohms.
Note 3. The voltmeter is
optional and reads voltage
proportional to the current.
Length of wiring to this terminal
is limited to 1 Meter.
Note 4. Unused channels will
show open loop unless outputs
are shorted as shown for
channel 8.
(See Note 3)
following UL listed modules:
140 CPU xxx xx
140 CPS xxx xx
Note 3. If the electrical
parameter of the cable are
unknown, the following values
must be used for Ccable and
Lcable:
Capacitance 60 Pf/ft
Inductance 0.20 uH/ft
140 AIO 330 00 Wiring Diagram31001364 Rev 00
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com