Control Connections - Emerson Unidrive M702 User Manual

Safety Product Mechanical
information information installation
4.14

Control connections

4.14.1 General
Table 4-24 The control connections consist of:
Function Qty
Destination, invert, logic
Digital input 2
select
Input / output mode select,
Digital input / output 2 destination / source, invert,
logic select
Relay 1 Source, invert
Drive enable (SAFE
2
TORQUE OFF)
+24 V User output 1 Source, invert
0 V common 5
+24 V External input 1 Destination, invert
Key:
Indicates the parameter which is being controlled
Destination parameter:
by the terminal / function
Indicates the parameter being output by the
Source parameter:
terminal
Digital - indicates the mode of operation of the
terminal, i.e. positive / negative logic (the Drive
Mode parameter:
Enable terminal is fixed in positive logic), open
collector.
All digital terminal functions (including the relay) can be programmed in
menu 8.
The control circuits are isolated from the power circuits in the
drive by basic insulation (single insulation) only. The installer
must ensure that the external control circuits are insulated
from human contact by at least one layer of insulation
WARNING (supplementary insulation) rated for use at the AC supply
voltage.
If the control circuits are to be connected to other circuits
classified as Safety Extra Low Voltage (SELV) (e.g. to a
personal computer), an additional isolating barrier must be
included in order to maintain the SELV classification.
WARNING
If any of the digital inputs (including the drive enable input)
are connected in parallel with an inductive load (i.e.
contactor or motor brake) then suitable suppression (i.e.
diode or varistor) should be used on the coil of the load. If no
CAUTION suppression is used then over voltage spikes can cause
damage to the digital inputs and outputs on the drive.
Ensure the logic sense is correct for the control circuit to be
used. Incorrect logic sense could cause the motor to be
started unexpectedly.
Positive logic is the default state for the drive.
CAUTION
N
NOTE
Any signal cables which are carried inside the motor cable (i.e. motor
thermistor, motor brake) will pick up large pulse currents via the cable
capacitance. The shield of these signal cables must be connected to
ground close to the point of exit of the motor cable, to avoid this noise
current spreading through the control system.
N
NOTE
The SAFE TORQUE OFF drive enable terminal is a positive logic input
only. It is not affected by the setting of Input Logic Polarity (08.029).
78
Electrical Getting Basic
installation started parameters
Control parameters Terminal
available number
41, 42
11, 13
1, 3, 6,
10, 12
Running NV Media Card
Optimization
the motor Operation
Figure 4-44 Default terminal functions
7, 8
4, 5
2
9
SAFE TORQUE OFF
SAFE TORQUE OFF
*The SAFE TORQUE OFF / Drive enable terminal is a positive logic input
only.
Onboard Advanced Technical
PLC parameters data
41 42
1 13
0 V common
+24 V
0 V common
At zero speed
0 V common
Run forward
Run reverse
+24 V
0 V common
Input 1*
0 V common
Input 2*
Drive OK
Unidrive M702 User Guide
UL listing
Diagnostics
information
1
2
3
4
5
6
7
8
9
10
11
12
13
41
Relay
(Over voltage
42
category II)
Issue Number: 3