Instruction manual 91/121 V6.3
Installation
Drawing 10
Connection of a numerical control (or a PLC)
with
balanced output
to provide the speed refer-
ence.
Drawing 11
Connecting a
potentiometer
to a generic analog
input to provide a reference.
Connection of a numerical control (or PLC) with
unbalanced output
to a generic analogue input
to provide a reference.
4.4.10 Connector X12
Connect digital inputs.
Power supply voltage from 18Vcc to 30Vcc (nominal 24Vcc). Current absorbed 10mA. The status of each digital input is displayed
by the corresponding LED which indicates that the command is valid (see paragraph ”Yellow LEDs – Commands“ from page 69).
In the presence of severe disturbances it is recommended to use good quality shielded cables and connect the two ends of the screen to
ground. On the drive case, near the connectors, anchorages are available for screens (see Mechanical characteristics page 78).
Signal allocation to PINs:
1
DEN
Enable input of the drive. If this command is missing, the motor is free.
2
REN
“Ramp Enable“ input. Enable the speed ramp.
NOTE: If the drive is controlled by a CNC, only the speed ramp on the CNC and not that of the drive must be used.
3
RTD
“Reset“ input. It allows you to exit the alarm state and restore the drive’s operation after removing the cause that gen-
erated it.
•
Alarm reset is only possible if the drive is disabled (led DEN off).
•
Alarm reset is only possible if the cause that generated it has been eliminated.
4
DI1
Digital input 1 programmable. This command is normally not active.
5
DI2
Digital input 2 programmable. This command is normally not active.
6
DI3
Digital input 3 programmable. This command is normally not active.
7
DI4
Digital input 4 programmable. This command is normally not active.
8
D0V
0V digital inputs.
Alter Elettronica s.r.l.
19
Drawing 12
