Voltage And Current; 2-Wire Transmitter Input); Thermocouple; Resistance Thermometer (Rtd) - ABB C1300 User Manual

C1300
Advanced circular chart recorder

5.2.2 Voltage and Current

Note. Input impedances:
Low voltage (mV) >10M
Voltage >10M
Current (mA) 100

5.2.3 2-wire Transmitter Input)

Power for the transmitter is supplied by terminal 6.
Note. The voltage across terminals 4 and 6 is 20V
(nominal). This is due to internal voltage drops across a
shunt resistor and measurement circuitry.

5.2.4 Thermocouple

Use the correct compensating cable between the thermocouple
and the terminals – see Table 5.1 on page 68.
An automatic cold junction (ACJC) is incorporated but an
independent cold (reference) junction may be used.
+
1
–
2
3
4
Analog Input – see B to H
5
6
7
Common
Logic 1
8
9 Logic 2
10
Normally Open
Common
11
12 Normally Closed
Note. Not applicable on Type 2 Modules.
A – Summary of Connections
–
3
+
6
B – Voltage
*
Recommended diode:
Diode forward voltage must be > 0.8 V @ 20 mA or use 2 x 1N4001 general purpose diodes in series.
Fig. 5.5 Channel Connections
IM/C1300 Rev. J
Analog Output (see Note below)
Logic Inputs (see Note below)

Relay Output

3
4
C – Current
(non 2-wire transmitters)

5.2.5 Resistance Thermometer (RTD)

If long leads are necessary it is preferable to use a 3-lead
resistance thermometer.
If 2-lead resistance thermometers are used each input must be
calibrated to take account of the lead resistance.

5.2.6 Logic Inputs

The two logic inputs accept either volt-free (switch) or TTL (5V)
input types and can be used for remote switching of many
recorder functions, e.g. chart stop/go, alarm acknowledgment,
totalizer reset etc. – see Section 3.11, page 47.

5.2.7 Analog Output

5.2.8 Relay Output
Note. Relay specification:
Type
Voltage
Current
Loading (non inductive)
Isolation, contacts to earth 2kV RMS
4
6
3
6
E – Thermocouple
–
Red
4
White
5
Red
6
+
G – 3-wire RTD
*
5 Electrical Installation
single pole changeover
250V AC 250V DC
5A AC 5A DC
1250VA 50W
–
–
Tx See Note below
+
+
D – 2-wire Transmitter
3
–
+
6
F – Low Voltage (mV)
4
5
6
H – 2-wire RTD & Resistance
–
+
Link
White
Red
69