Wiring - Generalities
Overview
The wiring of each part of the LTMR controller and the LTME expansion module is detailed further with its specificities:
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Wiring the voltage transformers on the LTME expansion module.
The wiring of the communication port depends on the communication protocol and is described in each communication guides.
Wiring Rules
The following wiring rules must be respected in order to reduce disturbance due to EMC on the behavior of the LTMR controller:
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Keep a distance as large as possible between the communication cable and the power and/or control cables (minimum 30 cm or 11.8 in.).
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Cross over different types of cables at right angles, if necessary.
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Do not bend or damage the cables. The minimum bending radius is 10 times the cable diameter.
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Avoid sharp angles of paths or passage of the cable.
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Use shielded cables to connect ground current sensors:
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The cable shield must be connected to a protective ground at both ends.
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The connection of the cable shield to the protective ground must be as short as possible.
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Connect together all the shields, if necessary.
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Perform the grounding of the shield with a collar.
-
-
Add filters on contactor coils for all contactors and relays.
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Place the cable along the grounded plate around the withdrawable drawer.
For more information, refer to the Electrical Installation Guide (available in English only), chapter ElectroMagnetic Compatibility (EMC).
Wiring Diagram Example: LTMR Controls a Three-phase Motor
Wiring Diagram Example: LTMR Controls a Single-phase Motor
LTMR Controller Plug-in Terminals and Pin Assignments
The LTMR controller has the following plug-in terminals and pin assignments:
|
Terminal Block |
Pin |
Description |
|---|---|---|
|
Control voltage, logic input, and common source terminals |
A1 |
Supply voltage input (+ / ∼) |
|
A2 |
The negative of a power supply for DC models, or the grounded secondary of a control power transformer for AC models (– / ∼) |
|
|
I.1 |
Logic input 1 |
|
|
I.2 |
Logic input 2 |
|
|
I.3 |
Logic input 3 |
|
|
I.4 |
Logic input 4 |
|
|
I.5 |
Logic input 5 |
|
|
I.6 |
Logic input 6 |
|
|
C |
Input common |
|
|
O.4 Logic output terminals |
97–98 |
NO contact |
|
95–96 |
NC contact |
|
|
Note: The 97–98 contacts and the 95–96 contacts are on the same relay, so the open/closed status of one pair of contacts is always the opposite of the status of the other pair. |
||
|
O.1 to O.3 Logic output terminals |
13–14 |
NO contact – logic output 1 |
|
23–24 |
NO contact – logic output 2 |
|
|
33–34 |
NO contact – logic output 3 |
|
The LTMR controller has the following plug-in terminals and pin assignments for different communication protocols:
|
Communication Protocol |
Terminal Block |
Pin |
Description |
|---|---|---|---|
|
Ethernet |
Ground current trip input and temperature sensor input |
Z1–Z2 |
Connection for external ground current sensor |
|
T1–T2 |
Connection for motor temperature sensors |
||
|
PROFIBUS DP |
Ground current trip input and temperature sensor input, and PLC terminals |
Z1–Z2 |
Connection for external ground current sensor |
|
T1–T2 |
Connection for embedded motor temperature sensing elements |
||
|
S |
PROFIBUS DP shield or FE pin |
||
|
A |
Receive/transmit data-N pin; A-line |
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|
B |
Receive/transmit data-P pin; B-line |
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|
DGND |
Data ground pin |
||
|
VP |
Power supply pin) |
||
|
CANopen |
Ground current trip input, and temperature sensor input, and PLC terminals |
Z1–Z2 |
Connection for external ground current sensor |
|
T1–T2 |
Connection for embedded motor temperature sensing elements |
||
|
V- |
CANopen common pin |
||
|
CAN.L |
CAN.L pin (dominant low) |
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|
S |
CANopen shield pin |
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|
CAN.H |
CAN.H pin (dominant high) |
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|
V+ |
CANopen external power supply) |
||
|
DeviceNet |
Ground current trip input and temperature sensor input, and PLC terminals |
Z1–Z2 |
Connection for external ground current sensor |
|
T1–T2 |
Connection for embedded motor temperature sensing elements |
||
|
V– |
DeviceNet common pin |
||
|
CAN.L |
DeviceNet CAN.L pin (dominant low) |
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|
S |
DeviceNet shield pin |
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|
CAN.H |
DeviceNet CAN.H pin (dominant high) |
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|
V+ |
DeviceNet external power supply pin |
LTME Expansion Module Plug-in Terminals and Pin Assignments
The LTME expansion module has the following plug-in terminals and pin assignments:
|
Terminal block |
Pin |
Description |
|---|---|---|
|
Voltage inputs |
LV1 |
Phase 1 input voltage |
|
LV2 |
Phase 2 input voltage |
|
|
LV3 |
Phase 3 input voltage |
|
|
Logic inputs and common terminals |
I.7 |
Logic input 7 |
|
C7 |
Common for I.7 |
|
|
I.8 |
Logic input I.8 |
|
|
C8 |
Common for I.8 |
|
|
I.9 |
Logic input I.9 |
|
|
C9 |
Common for I.9 |
|
|
I.10 |
Logic input I.10 |
|
|
C10 |
Common for I.10 |
Terminal Wiring Characteristics
Both the LTMR controller and LTME expansion module terminals have the same characteristics.
Terminals have an insulation rating of 320 Vac.
The following table describes the characteristics of cables that may be used to wire the terminals:
|
Cable Type |
No. of Conductors |
Conductor Section |
|
|---|---|---|---|
|
mm² |
AWG |
||
|
Flexible (stranded) cable |
Single conductor |
0.2...2.5 |
24...14 |
|
Two conductors |
0.2...1.5 |
24...16 |
|
|
Solid cable |
Single conductor |
0.2...2.5 |
24...14 |
|
Two conductors |
0.2...1.0 |
24...18 |
|
|
Flexible (stranded) cable with insulated cable ends |
Single conductor |
0.25...2.5 |
24...14 |
|
Two conductors |
0.5...1.5 |
20...16 |
|
|
Flexible (stranded) cable with non-insulated cable ends |
Single conductor |
0.25...2.5 |
24...14 |
|
Two conductors |
0.2...1.0 |
24...18 |
|
The following table describes the characteristics of the terminals:
|
Pitch |
5.08 mm |
0.2 in. |
|
Tightening torque |
0.5 to 0.6 N•m |
5 lb-in |
|
Flat screwdriver |
3 mm |
0.10 in. |