Technical Description; Application; Design - Siemens SIMATIC S5 Manual

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Technical Description

1.1 Application

The IP 244 temperature controller can be used in SIMATIC S5-115U, S5-135U and S5-155U
programmable controllers and expansion units as an intelligent I/O module for automatic control
of machines. When used in the S5-115U, an adapter casing is required (order number:
6ES5 491-0LA11). The IP 244 module is used in S5 systems not only for temperature control
but also for measured value acquisition and limit value monitoring of analog transmitter signals.
The manipulated variables output by the controller are digital. One special application of the
module is in the temperature control of plastic injection molding machines and monitoring the
injection pressure and mold clamping force.
The module is configured as follows:
either: – 15 analog input channels to connect voltage sensors directly.
When delivered, channels 0 to 12 are prepared for thermocouples
(0 to 51.2 mV)
Channels 13 and 14 are used to acquire transducer signals
Channel 15 is used as a compensation channel for thermocouples and is
suitable for the direct connection of a Pt 100 resistance thermometer
or: – 8 analog input channels for connecting resistance-type sensors
directly using a 4-wire connection (0 to 512 mV)
– A comparator output and 17 digital output channels to output the manipulated variable of the
controller (pulse-duration modulated). Actuators can be operated directly (rated output
current).
– Automatic controller for up to 13 control loops.
– Control function independent of the status of the CPU of the PLC.

1.2 Design

The IP 244 temperature controller module is a compact module in a double-height Eurocard
format belonging to the ES 902 packaging system with a 48-pin backplane connector. The
backplane connector is the interface to the SIMATIC S5 bus.
The front panel contains a 37-pin socket connector for the analog inputs (X3)
L+ (24 V load voltage) is supplied via a tab connector on the front panel, L– is connected to the
reference potential of the controller (central grounding point in the cabinet). L– is supplied to the
module via the M pin (external chassis).
ext
20 green LEDs on the front panel indicate the operating status of the temperature controller
module, the input and outputs. A red LED indicates that one or more digital outputs are
short-circuited.
IP244
C79000–B8576–C859–02
Technical Description
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