Go to start pageHardware descriptions...Device specificationsTerminal units for S500(-XC) I/O modulesTU531 and TU532 for I/O modules
TU531 and TU532 for I/O modulesPermalink

  • TU531, I/O terminal unit, 120/230 V AC, screw terminals

  • TU532, I/O terminal unit, 120/230 V AC, spring terminals

  • TU532-XC, I/O terminal unit, 120/230 V AC, spring terminals, XC version

  • TU532-H, I/O terminal unit, hot swap, 120/230 V AC, spring terminals

  • TU532-H-XC, I/O terminal unit, hot swap, 120/230 V AC, spring terminals, XC version

TU531-01

1

I/O bus (10 pins, male) to connect the previous terminal unit, the CPU terminal base or the communication interface module to the terminal unit

2

I/O bus (10 pins, female) to connect other terminal units

3a

Plug (2 x 25 pins) to connect the inserted I/O modules

3b

Plug (3 x 19 pins) to connect the inserted I/O modules

4

With a screwdriver inserted in this place, the terminal unit and the adjacent I/O terminal unit can be shoved from each other

5

Holes for screw mounting

6

40 terminals for signals and process supply voltage

7

DIN rail

8

White border signifies hot swap capability of the terminal unit

The input/output modules (I/O modules) plug into the I/O terminal unit. When properly plugged-in, they are secured with two mechanical locks. All the connections are established via the terminal unit, which allows removal and replacement of the I/O modules without disturbing the wiring at the terminal unit.

The terminal units TU531 and TU532 are specifically designed for use with AC500/S500 I/O modules that incorporate 115 V AC ... 230 V AC inputs and/or 120/230 V AC relay outputs.

XC version

XC = eXtreme Conditions

TU5xx-XC

Extreme conditions

Extreme conditions

Terminal units for use in extreme ambient conditions have no Snowflake, 1_4 sign for XC version.

The figure 4 in the Part no. 1SAP4... (label) identifies the XC version.

Terminals

Screw terminals

Spring terminals

Conductor
TU508-2

Screwdriver

Conductor
TU508-3

Screwdriver (opens terminal)

The terminals 1.8 ... 4.8 and 1.9 ... 4.9 are electrically interconnected within the terminal unit.

The terminals always have the same assignment, independent of the inserted module:

  • Terminals 1.8 ... 4.8: process supply voltage UP = +24 V DC

  • Terminals 1.9 ... 4.9: process supply voltage ZP = 0 V

The assignment of the other terminals depends on the inserted communication interface module (see the description of the respective module used).

The supply voltage of 24 V DC for the module's circuitry comes from the I/O expansion bus (I/O bus).