Front Panel Description; Active Led; Input Terminals For Channels; Simatic 505-2556 Front Panel Description - Siemens SIMATIC 505 Installation And Operation Manual

1.1

Front Panel Description

Active LED

Input Terminals for
Channels 1–16
1-2 Description
The Sixteen Channel Thermocouple Input Module is a member of Siemens
Energy & Automation, Inc., family of I/O modules compatible with the
SIMATIC 505 programmable controllers. The SIMATIC 505–2556 is
designed to translate a J, K, R, S, T, E, and L (DIN J) thermocouple or
millivolt input signal into an equivalent digital word which is then sent to
the programmable controller (PLC).
The SIMATIC 505–2556 Thermocouple Input Module features built–in
independent internal cold junction compensation and linearization for each
thermocouple input for Types J, K, E, R, S, L, and T. No external cold
junction compensation is required.
The Active LED is illuminated when the module is functioning normally. If
the Active LED is not lit, refer to Chapter 3 for troubleshooting.
The SIMATIC 505–2556 uses a fixed wire press in connector to minimize
the effects of the connector mettalurgy on the accuracy of the measurement.
This connector provides wiring terminals for channels 1–16.
Figure 1-1 shows the front panel of the SIMATIC 505–2556.
Figure 1-1 SIMATIC 505–2556 Front Panel Description
Active Led
Input Terminals
for Channels 1-16
SIMATIC 505–2556 Installation and Operation Guide