178 • I/O modules
Analog Inputs 750-462, /000-XXX
Modular I/O System
ETHERNET TCP/IP
Technical Data:
Item-No.:
750-462
Number of inputs
2 (Differential Input, max
±
3.5 V)
Nominal voltage
via system voltage
Sensor types
K, S, T, mV-Meter, J, B, E, N, R, U
Cold junction compensation
on each module
Resolution
0.1 °C
Isolation DC/DC
500 V System/power supply
Input current (internal)
65 mA max.
Conversion time
640 ms
Internal bit width
2 x 16 Bit Data, optional: 2 x 8 Bit control/status
Configuration
None, or via software with the consent of WAGO
Operating temperature
0 °C ... + 55 °C
Wire connection
CAGE CLAMP
; 0.08 mm
2
- 2.5 mm
2
, AWG 28 – 14,
8 – 9 mm Stripped length
Dimensions (mm) WxHxL
12 x 64* x 100 (*from upper edge of carrier rail)
Presetting
- 100 °C / + 1370 °C; Type K
Attention
The 462/000-XXX modules could be replaced by the 469/000-XXX modules!
The 750-462 module permits the direct connection of thermocouple sensors.
The module is suitable for 2 or 3-wire thermocouples. For the 2-wire connec-
tion, connect the thermocouple wires between TC- and TC+ . For the 3-
conductor connection, the shield is also connected. The operation of grounded
sensors is provided by means of internal electrical isolation.
Attention
Both inputs are referenced to a common potential (not isolated)!
The linearization is provided over the complete range by a microprocessor.
The temperature ranges of the sensors are represented with a resolution of 1 bit
per 0.1°C in one word (16 Bit). Thus, 0°C corresponds to the value 0000, and
25.5°C correspond to the value 0 x 00FF. Temperatures below 0°C are repre-
sented in two’s complement.
Within the whole range of all thermocouples, the function module works like a
‘mV meter’. The voltage resolution is represented with 16 bits. A processor
converts the voltage value into a numerical value proportional to the measured
temperature of the selected type of thermocouple.