14.02-8
Section C. Input and Output Connection Diagrams.
2100-A
16
Input Connection Diagram for mA Inputs.
Connection configuration for 2 wire, 3 wire and 4 wire transmitters, and digital inputs.
Connection Example 1.
+
Output
-
3-wire
Transmitter
+
-
2-wire
Transmitter
+
-
4-wire
Transmitter
Power
Supply
24Vdc Regulated
Power
+ Supply. -
Voltage Free
Contact
+
Channel 1
-
+
Channel 2
-
+
Channel 3
-
+
Channel 4
-
2100-A
16
1k
Current Output
Field Transmitters
Note 1.
All 2100-A
16
analogue inputs are
differential. Exceeding 18V peak between
any 2 inputs, or any single input will cause
errors on ALL channels.
In example 2, the peak voltage is
calculated by multiplying the max mA out
of any transmitter, by the sum of the
resistances in the transmitter loop, then
adding any common peak voltages.
eg: (refer to Connection Example 2)
If the transmitter has a 35mA max, the
2100-A
16
has 25 input resistance; and if
a chart recorder has 250 input resistance:
There is a 2V peak common voltage.
=> 35mA x (25 + 250 ) + 2V = 11.63V peak.
This is fine, as it is less than 18V.
Note 2.
For mA inputs a jumper must be installed.
Failure to install a jumper will cause errors
on ALL channels. J1 for channel 1, J2 for
channel 2, etc. The jumpers are located
directly behind the 3 terminals for each
respective channel. They can be installed
without removing the cover.
Note 3.
Inputs can be used as digital inputs for
sensing a clean, voltage free, field contact.
Note 4.
All cables must be screened, and the
screens earthed at one end only.
Note 5.
Voltage free contact values must be brought
in through ‘tags’ in the Scada Software.
1
2
4
5
7
8
10
11
Connection Example 2.
+
Output
-
3-wire
Transmitter
+
-
2-wire
Transmitter
+
-
4-wire
Transmitter
Power
Supply
24Vdc Regulated
Power
+ Supply. -
+
Channel 1
-
+
Channel 2
-
+
Channel 3
-
2100-A
16
Current Output
Field Transmitters
1
2
4
5
7
8
+ Channel 3
+ Channel 2
+ Channel 1
-
Common
eg Single Ended Chart
Recorder.
All negative inputs are
connected together.
Channel 1
Channel 2
Channel 3
2100-A
16
Input Connection Diagram for Millivoltage and Voltage Inputs.
Connection configuration for 3 wire and 4 wire transmitters, and digital inputs.
+
Output
-
3-wire
Transmitter
+
Output
-
3-wire
Transmitter
+
-
4-wire
Transmitter
+
-
4-wire
Transmitter
Power
Supply
Power
Supply
24Vdc Regulated
Power Supply.
+
-
+
Channel 1
-
+
Channel 2
-
+
Channel 3
-
+
Channel 4
-
+
Channel 5
-
+
Channel 6
-
2100-A
16
Field
Transmitters
Note 1.
All millivolt and volt inputs are differential.
Exceeding 18V peak between any 2 inputs,
or any single input will cause errors on ALL
channels.
Note 2.
Inputs can be used as digital inputs for
sensing a clean, voltage free, field contact.
Note 3.
All cables must be screened, and the screens
earthed at one end only.
Note 4.
Input voltages must not exceed 18V.
Note 5.
For digital inputs the mA jumper must be
installed.
Note 6.
Voltage free contact values must be brought
in through ‘tags’ in the Scada Software.
Voltage Free
Contact
Voltage Free
Contact
1
2
4
5
7
8
10
11
13
14
16
17
1k
1k
