Analog input
ER3204-0002
 
ER3204-0002 | 4-channel analog input PT100 (RTD)
ER3204-0002
Connector
assignment
I/O
connection
M12 I/O
connection sockets 
Signal status display 
Labelling areas 
Power supply
status display:
Box supply (US
Auxiliary voltage (UP
Power supply feed 
Power supply down- 
stream connection
1 | RL+
2 | R+
3 | RL-
4 | R-
5 | Shield
1 | Tx+
2 | Rx+
3 | Rx-
4 | Tx-
1 | + 24 V DC Us
2 | + 24 V DC UP
3 | GNDs
4 | GNDP
4-wire 3-wire 2-wire
EtherCAT
signal input 
EtherCAT
signal output 
extended temperature range

ER3204-0002 | 4-channel analog input PT100 (RTD)

The ER3204 EtherCAT Box with analog inputs allows resistance sensors to be connected directly. The module’s circuitry can operate the sensors using 2-, 3- or 4-wire connection techniques. Linearisation over the full temperature range is realised with the aid of a microprocessor. The temperature range can be selected freely. The module can also be used for simple resistance measurement with the output in ohms. The module’s standard settings are: resolution 0.1 °C in the temperature range of PT100 sensors in 2-wire connection. Sensor malfunctions such as broken wires are indicated by error LEDs. The module is quite versatile, but the default values are selected in such a way that in most cases it is not necessary to perform configuration. The input filter and associated conversion times can be set within a wide range; several data output formats may be chosen. If required, the inputs can be scaled differently. Automatic limit monitoring is also available. Parameterisation is carried out via EtherCAT.

The EtherCAT Box modules with zinc die-cast housing are ready for use in harsh industrial and process environments. With the fully sealed design and metal surfaces the ER series is ideal for applications requiring enhanced load capacity and protection against weld spatter, for example.

Technical data ER3204-0002
Number of inputs 4
Connection method screw type M12 for 2-, 3- and 4-wire connections, presetting: 2-wire
Protocol EtherCAT
Bus interface 2 x M8 socket, shielded, screw type
Sensor types PT100, PT200, PT500, PT1000, Ni100, Ni120, Ni1000 resistance measurement (e.g. potentiometer, 10 Ω…1.2/4 kΩ)
Signal type PT100
Measuring range -200…+850 °C (PT sensors); -60…+250 °C (Ni sensors)
Resolution 0.1 °C per digit
Measuring error < ±0.5 °C for PT sensors (further types see documentation)
Conversion time 800 ms up to 2 ms, see documentation, default: approx. 85 ms
Nominal voltage 24 V DC (-15 %/+20 %)
Distributed clocks
Measuring current typ. 0.5 mA
Input filter 5 variations, configurable
Sensor supply
Current consumption from US (without sensor current) 120 mA
Power supply connection feed: 1 x M8 male socket, 4-pin; downstream connection: 1 x M8 female socket, 4-pin
Bit width in the process image 4 x 32 bit RTD input
Electrical isolation 500 V
Special features open-circuit recognition
Operating/storage temperature -25…+60 °C/-40…+85 °C
Vibration/shock resistance conforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emission conforms to EN 61000-6-2/EN 61000-6-4
Protect. class/installation pos. IP 65/66/67 (conforms to EN 60529)/variable
Approvals CE, UL in preparation
Related products  
EP3204 EtherCAT Box, industrial housing, 4-channel analog input PT100 (RTD)