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Analogue Inputs AI4
AI4 provides 4 electrical isolated high accuracy inputs for generic use. Input signal type is for
thermocouples, PT100, 0-20mV/50mV, 0-5V, 0-10V, 0/4-20mA, resistive types (2 or 3 wire).
Selection is done by the configuration automatically.
See sketch on the right for individual signal connections.
Analogue Outputs AO4
AO4 module expands your TC-S2 with 4 electrically isolated outputs to drive power devices
(such as thyristors) or to output process values.. Depending on configuration the output provi-
des a 0-10V or 0/4-20mA signal. In voltage mode the max load is limited to 50mA each output,
in current mode a burdon <600 Ohms is required. Overload or open output failure is detected
and reported. An AUTO-restart takes place every 2 seconds (output LED on AO4 flashes).
Digital Inputs / Outputs DIO8
DIO8 provides 8 digital inputs and outputs each. The outputs are designed to directly drive DC
relays (max. load 1A per output). The outputs are short circuit proof and contain thermal protec-
tion. Overload condition is reported to the TC-S2. The inputs directly connect to any actuator
sensor (input current threshold 5mA). Both inputs and outputs are optically isolated from the
TC-S2 and designed for 24V DC operation (voltage GOOD is reported to the TC-S2). However,
the actual operating range is from 10 to 30V DC.
18
AIx.0
AIx.1
AIx.2
Voltage Signals
Current Signals
+
COM+
COM+
+
U -
U -
Thermocouple
R -
R -
I -
I -
AOx.0
AOx.1
AOx.2
AOx.3
+
+
+
+
x.0
x.1
x.2
x.3
x.4
x.5
x.6
x.7
x.0
x.1
x.2
x.3
operating instructions bentrup TC-S2 V1.1
AIx.3
Resistance Signals
COM+
(3-wire)
U -
R -
I -
x.4
x.5
x.6
x.7
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