80
Unidrive M Modular Installation Guide
Issue Number: 2
Refer to section on page 89 for further information.
6.12.3
Unidrive M702
control connections
Table 6-23 The control connections consist of:
Key:
All digital terminal functions (including the relay) can be programmed in
menu 8.
30
0V common
Function
Common connection for all
external devices
31
SAFE TORQUE OFF function (drive enable)
Type
Positive logic only digital input
Voltage range
0 V to +24 V
Absolute maximum applied
voltage
30 V
Logic Threshold
10 V ± 5 V
Low state maximum voltage for
disable to SIL3 and PL e
5 V
Impedance
>4 mA @15 V from IEC 61131-2, type 1,
3.3 k
Ω
Low state maximum current for
disable to SIL3 and PL e
0.5 mA
Response time
Nominal: 8 ms
Maximum: 20 ms
The SAFE TORQUE OFF function may be used in a safety-related application in
preventing the drive from generating torque in the motor to a high level of
integrity. The system designer is responsible for ensuring that the complete
system is safe and designed correctly according to the relevant safety
standards. If the SAFE TORQUE OFF function is not required, this terminal is
used for enabling the drive.
41
Relay contacts
42
Default function
Drive OK indicator
Contact voltage rating
240 Vac, Installation over-voltage
category II
Contact maximum current rating
2 A AC 240 V
4 A DC 30 V resistive load
0.5 A DC 30 V inductive load (L/R = 40 ms)
Contact minimum recommended
rating
12 V 100 mA
Contact type
Normally open
Default contact condition
Closed when power applied and drive OK
Update period
4 ms
51
0 V
52
+24 Vdc
Size 6
Nominal operating voltage
24.0 Vdc
Minimum continuous operating voltage
18.6 Vdc
Maximum continuous operating voltage
28.0 Vdc
Minimum startup voltage
18.4 Vdc
Maximum power supply requirement
40 W
Recommended fuse
4 A @ 50 Vdc
Size 7 to 10
Nominal operating voltage
24.0 Vdc
Minimum continuous operating voltage
19.2 Vdc
Maximum continuous operating voltage
30 Vdc (IEC),
26 Vdc (UL)
Minimum startup voltage
21.6 Vdc
Maximum power supply requirement
60 W
Recommended fuse
4 A @ 50 Vdc
To prevent the risk of a fire hazard in the event of a fault, a
fuse or other over-current protection must be installed in the
relay circuit.
Function
Q
ty
Control parameters
available
Terminal
number
Digital input
2
Destination, invert, logic
select
7, 8
Digital input / output
2
Input / output mode select,
destination / source, invert,
logic select
4, 5
Relay
1
Source, invert
41, 42
Drive enable (SAFE
TORQUE OFF)
2
11, 13
+24 V User output
1
Source, invert
2
0 V common
5
1, 3, 6,
10, 12
+24 V External input
1
Destination, invert
9
Destination parameter:
Indicates the parameter which is being controlled
by the terminal / function
Source parameter:
Indicates the parameter being output by the
terminal
Mode parameter:
Digital - indicates the mode of operation of the
terminal, i.e. positive / negative logic (the Drive
Enable terminal is fixed in positive logic), open
collector.
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
(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.
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
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.
WARNING
WARNING
WARNING
CAUTION
CAUTION
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