Triguard SC300E
TAI16AEA
INTRODUCTION
PURPOSE
16-Channel Analogue Input
Termination Module
(TAI16AEA
Issue 6
October 2005
)
The TAI16AEA 16-Channel Analogue Input Termination Card provides an interface between the
analogue input circuits of a SC300E chassis and the field devices they are monitoring. The
TAI16AEA provides:
• Screw terminals for the field wiring
• Fuse protection for the field loops
• Overvoltage protection and transient suppression.
This document is intended to provide a general understanding of the function of the
sufficient
to
enable basic maintenance operations to be effected in the field.
ASSOCIATED DOCUMENTATION
Reference No
008-5103
TAI16AEA,
MAI32*AD Analogue Input Modules User Manual
Title
SPECIFICATION
Model
No. of digital input channels
Fuse in each positive line to field
Chassis cable connector
34 way DIN41612
16
63mA, fast acting, wire ended
008-5120
TAI16AEA
2
TAI16AEA
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2005–
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SC300E
Field cable connector
Screw terminals to suite 2.5mm2wire (16AWG)
TAI16AEA
October
2005–
Issue 6
3
Triguard
Model
SC300E
TAI16AEA 16-Channel A/I Termination Module
TAI16AEA
Transient suppression
Safety ground terminal TS1
Signal ground terminal TS2
Overall size (mm)
Overall size (inches)
Weight
A transient suppressor device between each field
return
line and a common 0V bus clamps the field
return
line voltage (with respect to 0V common) as
follows:
+37Vdc to +43Vdc @ 1mA (maximum for continuous
overload)
+70Vdc @ 69A maximum peak pulse current
for 8ms to 20ms
M3 threaded bush provision for a ring terminal. Allows
the
ohm
card
M3 threaded bush provision for a ring terminal. Allows
J1 pin1a (field circuit) to be grounded.
162L x 111W x 107H
6.4L x 4.9W x 4.2H
0.20kg
common 0V supply bus to be grounded via a 10k
resistor. Prevents the channels from floating if the
is
disconnected from the chassis.
ENVIRONMENTAL SPECIF
The maximum ambient temperature measured at the hottes
shall not be greater than 60 degrees centigrade.
Temperature operating:
Temperature
Humidity
EMC/RFI
Vibration/Shock
Certification:
General Certification: Ref. SC300E Product Guide (ref 008-5209)
storage:
Immunity
ICATIONS
t point within the Triguard system
+5°C to +60°C
-
25°C to +70°C
5% to 95% non-condensing at ambient <40°C
Tested and certified to IEC 1131-Part 2 1994
Tested and certified to IEC 1131-Part 2 1994
TRANSPORT AND HANDLING
The TAI16AEA must be transported and stored in its original packing material which should be
retained
for this purpose.
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TAI16AEA
October
2005–
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SC300E
TAI16AEA
October
2005–
Issue 6
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SC300E
TAI16AEA 16-Channel A/I Termination Module
TECHNICAL DESCRIPTIO
N
PHYSICAL
The TAI16AEA comprises a PCB assembly mounted in a moulded carrier that can be snapped
onto all commercially available styles of DIN mounting rail. Connection to the ch
is
backplane
Figure 2-1 identifies the main components on the PCB and Figure 2-2 shows the TAI16AEA
with the DIN41612 connector attached and mounted on a typical DIN mounting rail.
via a multicore cable terminated at either end by a DIN41612 connector.
assis
Figure 2-1 TAI16AEA -
Component layout
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SC300E
Figure 2-2 Leading dimensions and mounting detail
TAI16AEA
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2005–
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SC300E
TAI16AEA 16-Channel A/I Termination Module
EXTERNAL CONNECTIONS
Fixed Terminal
Chassis connector J1
Field terminals 1-16(+) and 1-16(
Ground terminal TS1
Signal ground terminal TS2
Field circuits
The field input circuit shown in Figure 2-3 is the absolute minimum required for the safe
connection of analogue inputs to the module.
The TAI16AEA is recommended for use with the MAI32*AD range of 32-Channel Analogue
Input modules.
Connector, 34-way, DIN41612, female
-)
Screw term
Provision for M3 ring terminal
Provision for field circuit ground via M3 ring
terminal (see note in Section 2.2.1)
NOTE
inal to suite 2.52mm wire
Details
The input circuits must be directly or indirectly connected to this in such a way that the voltage on
all +ve and -ve
input lines is within ±15V of it under normal operation.
Figure 2-3 Basic field input circuit
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SC300E
THEORY OF OPERATION
The analogue input termination card provides a convenient and safe means of connect
16 field input channels to an analogue input module in the SC300E chassis. As shown in
Figure 2-3 each channel (a pair of lines) is connected via a 63mA fuse to the analogue input
module,
field
which may be configured for either voltage or current monitoring inputs. Power for the
loop circuits is supplied from an independent external source.
ing up to
Transient suppression
Each termination card circuit also embodies two methods of transient suppression.
A transient suppressor diode is fitted across each input to the analogue input module in the
SC300E chassis. The diode provides a discharge path for transient energy pulses that may
appear on the analogue input line following lightning strikes etc.
TAI16AEA
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SC300E
TAI16AEA 16-Channel A/I Termination Module
Analogue input channel connections
The analogue input cha
listed
in
Table 2-1.
Pin J1-1a is connected to TS2 to provide a signal ground connection
Screw terminals
Field loop input
Channel
1
2
3
4
5
6
7
signal
nnel wiring connections for connector J1 and the screw terminals are
Table 2-1. Analogue input channel connections
1(+)
2(+)
3(+)
4(+)
5(+)
6(+)
7(+)
Field loop return
from
field device
1(
-)
2(
-)
3(
-)
4(
-)
5(
-)
6(
-)
7(
-)
DIN41612 Connector J1
Field loop
fused (+ve)
i n p u t t o
J1-2a
J1-4a
J1-6a
J1-8a
J1-10a
J1-12a
J1-14a
Field loop
fused input
return (-ve)
J1-2c
J1-4c
J1-6c
J1-8c
J1-10c
J1-12c
J1-14c
Fuse
F1
F2
F3
F4
F5
F6
F7
8
9
10
10(+)
11
11(+)
12
12(+)
13
13(+)
14
14(+)
15
15(+)
16
16(+)
8(+)
9(+)
8(
9(
10(
11(
12(
13(
14(
15(
16(
-)
-)
-)
-)
-)
-)
-)
-)
-)
J1-16a
J1-18a
J1-20a
J1-22a
J1-24a
J1-26a
J1-28a
J1-30a
J1-32a
J1-16c
J1-18c
J1-20c
J1-22c
J1-24c
J1-26c
J1-28c
J1-30c
J1-32c
F8
F9
F10
F11
F12
F13
F14
F15
F16
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SERVICING
SCOPE
Servicing operations will not normally extend beyond the replacement of blown fuses.
CAUTION
Before replacing a blown fuse, ascertain the cause of failure, and take the appropriate remedial
action.
PREVENTIVE MAINTENAN
No preventive maintenance is necessary
CE
TAI16AEA
October
2005–
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Triguard
SC300E
TAI16AEA 16-Channel A/I Termination Module
SERVICE SUPPORT
SPARE PARTS
pare parts and technical advice can be obtained from the your local area office
LIST OF SPARES
Circuit Ref.
F1 to F16
380-1064
Part No.
63mA wire-ended fuse
.
Details
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