Connecting To A Screw Compression Type Terminal; Connecting To A Push-In Type Terminal; Wire Properties; Wire Length - ABB Sentry SSR32 Product Manual

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4.8

Connecting to a screw compression type terminal

Use a screwdriver with slot size 3,5 mm.
1.
Open the terminal before inserting a wire.
2. Insert the wire in the correct terminal.
3. Close the terminal and secure the wire with torque 0,7 Nm ±0,1.
4.9

Connecting to a push-in type terminal

1.
Press the actuating lever.
2. Insert the wire in the correct terminal.
3. Release the actuating lever.
4.10

Wire properties

Wire area, screw compression type connection block
Wire with crimp sleeve, ferrule or single solid conductor. Two wires with the same area must
be used. Wire strip length 6,5 mm ±0,5.
Minimum 1x24 AWG and Maximum 1x12 AWG
Minimum 1x0,2 mm
Minimum 2x24 AWG and Maximum 2x16 AWG
Minimum 2x0,2 mm
Wire area, push-in type connection block
Wire with crimp sleeve, ferrule or single solid conductor. Two wires with the same area must
be used. Wire strip length 6,5 mm ±0,5.
Minimum 1x24 AWG and Maximum 1x14 AWG
Minimum 1x0,2 mm
Minimum 2x24 AWG and Maximum 2x16 AWG
Minimum 2x0,25 mm
4.11

Wire length

The maximum wire length depends on the total resistance and total capacitance in the
transmitter loop for each channel. The model used to determine the maximum allowed wire
resistance and wire capacitance between the transmitter port (T) and the receiver port (R) is
shown in the figure.
Rext is the total wire resistance, and Cext is the total wire capacitance (to ground, or shield).
The switch symbolizes the sensor, placed halfway in the T-R loop (as indicated by having half
of Rext/Cext on each side). Iext is the current drawn by the sensor for its operation and/or
other external loads. The maximum allowed wire resistance, Rext, vs. the externally drawn
current Iext is listed in the table.
12
2
and Maximum 1x3,3 mm
2
and Maximum 2x1,5 mm
2
and Maximum 1x2,5 mm
2
and Maximum 2x1,5 mm
2
2
2
2
2TLC010067M0201 Rev.G

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