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TU515, I/O terminal unit, 24 V DC, screw terminals
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TU516, I/O terminal unit, 24 V DC, spring terminals
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TU516-XC, I/O terminal unit, 24 V DC, spring terminals, XC version
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TU516-H, I/O terminal unit, hot swap, 24 V DC, spring terminals
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TU516-H-XC, I/O terminal unit, hot swap, 24 V DC, spring terminals, XC version
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TU541, I/O terminal unit, 24 V DC, screw terminals
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TU542, I/O terminal unit, 24 V DC, spring terminals
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TU542-XC, I/O terminal unit, 24 V DC, spring terminals, XC version
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TU542-H, I/O terminal unit, hot swap, 24 V DC, spring terminals
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TU542-H-XC, I/O terminal unit, hot swap, 24 V DC, spring terminals, XC version
The input/output modules plug into the I/O terminal unit. When properly seated, 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.
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 (2 x 19 pins) to connect the inserted I/O modules
4
With a screwdriver inserted in this place, the terminal unit and the adjacent 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
XC version
XC = eXtreme Conditions
Extreme conditions
Extreme conditions
Terminal units for use in extreme ambient conditions have no 
sign for XC version.
The figure 4 in the Part no. 1SAP4... (lable) identifies the XC version.
Terminals
|
Screw terminals |
Spring terminals |
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|---|---|---|---|---|---|
|
Conductor |
 |
Screwdriver |
Conductor |
 |
Screwdriver (opens terminal) |
The following terminals are used for connection of the process supply voltage.
|
Terminals |
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|---|---|---|---|---|---|---|---|---|
|
Type |
1.8 |
2.8 |
3.8 |
4.8 |
1.9 |
2.9 |
3.9 |
4.9 |
|
TU515, TU516 and TU516-H |
These terminals are internally connected with assignment: process supply voltage UP = +24 V DC |
These terminals are internally connected with assignment: process supply voltage ZP = 0 V |
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|
TU541, TU542 and TU542-H |
These terminals are internally connected with assignment: process voltage UP = +24 V DC |
Separate process supply voltage UP3 = +24 V DC |
Separate process supply voltage UP4 = +24 V DC |
These terminals are internally connected with assignment: process supply voltage ZP = 0 V |
Separate process supply voltage ZP = 0 V |
Separate process supply voltage ZP = 0 V |
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The assignment of the other terminals depends on the inserted communication interface module (see the description of the respective module used).
Check the given design scheme of your control cabinet.
Check the ⮫ terminal unit compatibility.