Installation manual
38
Connection diagrams
Connection diagram conforming to standards EN 954-1 category 3 and
IEC/EN 61508 capacity SIL2, stopping category 1 in accordance with standard
IEC/EN 60204-1
This connection diagram is suitable for use with machines with a long freewheel stop time (machines with high inertia or low resistive torque).
This diagram must not be used for hoisting applications.
When the stop request is activated, deceleration of the motor, controlled by the drive, is requested first. Then, after a time delay
corresponding to the deceleration time, the Power Removal safety function is activated.
Example:
- 2-wire control
- LI1 assigned to forward
- LI2 assigned to reverse
(1)In this example, the logic inputs LIp are wired as “Source” but can be wired as “Sink Int” or “Sink Ext”.
(2)Line choke (if used)
(3)It is essential to ground the shielding on the cable connected to the Power Removal input.
- Standard EN 954-1 category 3 requires the use of a dual-contact stop button (S1).
- S1 is used to activate the Power Removal safety function.
- S2 is used to initialize the Preventa module when powering up or after an emergency stop. ESC enables the use of other initialization
conditions for the module.
- One Preventa module can be used for the Power Removal safety function on several ATV71 drives. In this case the time delay must
be set to the longest stopping time.
- A logic output on the Preventa module can be used to indicate reliably that the drive is operating in safe conditions.
Note:
For preventive maintenance, the Power Removal function must be activated at least once a year.
The drive power supply must be turned off and then on again before carrying out this preventive maintenance.
The drive logic output signals cannot be considered as safety-type signals.
Install interference suppressors on all inductive circuits near the drive or coupled to the same circuit (relays, contactors, solenoid valves, etc).
Choice of associated components:
Please refer to the catalog.
S1
F1
ESC
U / T1
V / T2
W / T3
R / L1
U1
W1
V1
M
3 a
S / L2
T / L3
+24
PWR
A1
R1A
R1C
R1B
LI1
LI6
LI2
S21 S11
A1
A2 PE Y1
13
T
-+
115 V
230 V
2
K2
K1
K3
K4
K1 K2K3
23
24
14 34 42 6858
33 41 57 67
B1 S12 S22
S33
XPS AT
Y2 Y3
K4
K1 K2
K2
K1
1
Y4 Y5
K3
K4
S2
N(-)
L1(+)
(1)
P0
PA / +
PB
PC / -
(2)
(3)
ATV71Hppppp
Braking resistor (if used)
Logic