5.2.3
Connecting a Terminal Board to the Field
The field connection terminal depends on the type of terminal board.
n
Screw Terminal Wiring for Terminal Boards
M4 screws are used for the connection terminals between 19-inch rack mountable terminal
board and the field.
l
Cables and Ring Terminals
For more information about cables, see the installation guidance.
Make sure to use ring terminals with insulation covers at the ends of the wires. The ring termi-
nals and crimping tool should be from the same vendor.
Insulation covering
inside diameter
Hole diameter
Ring outside diameter
Ring terminal length
C
Figure 5.2.3-1 Ring Terminal
Table 5.2.3-1 Ring Terminal Dimensions
Nominal
cross sec-
tional area
(mm
2
)
Screw (mm) Hole diame-
ter (mm)
Ring out-
side diame-
ter (mm)
Ring termi-
nal length
(mm)
Insulation
covering in-
side diame-
ter (mm)
Dimension
"C" (mm)
Remarks
1.25(*1)
4
4.3 or more 8.2 or less
About 21
3.6 or more 7.0 or more
2.0(*2)
4
4.3 or more 8.7 or less
About 21
4.3 or more 7.1 or more
5.5(*3)
4
4.3 or more 8.7 or less
About 25
5.8 or more 5.9 or more Only
SED2D
*1:
This type of ring terminals are mainly applied for the cables in the range of 0.25 to 1.65 mm
2
. It is necessary to check the
specifications from the vender to select the appropriate terminals.
*2:
This type of ring terminals are mainly applied for the cables in the range of 1.0 to 2.6 mm
2
. It is necessary to check the speci-
fications from the vender to select the appropriate terminals.
*3:
This type of ring terminals are mainly applied for the cables in the range of 2.6 to 6.6 mm
2
. It is necessary to check the speci-
fications from the vender to select the appropriate terminals.
SEE
ALSO
For more information about choosing cables, refer to:
ProSafe-RS Installation Guidance (TI 32S01J10-01E)
n
Pressure Clamp Terminal Wiring for the Terminal Board
When connecting the field devices to DIN rail mountable terminal board, the wires of the cable
are connected to the pressure clamp terminals. A wire of the cable connected to a pressure
clamp terminal of DIN rail mountable terminal board is shown as follows.
TIP
If SBT4D is used, the wire size and the length of sleeve to be peeled are different.
<5.2 How to Connect Signal Cables >
5-10
IM 32Q06C10-31E
4th Edition : Jan.30,2015-00
