Instruction manual

MICRO 4000
®
NET Controller
46
Appendix 5 / Discrete Isolated Inputs
The discrete isolated inputs allow the MICRO 4000 NET system to be remotely controlled by the
customer's PLC. There are eight control inputs: SERVO-CENTER, EDGE A, EDGE B, LINE /
CENTERLINE, MANUAL, IN, OUT, and AUXILIARY. All inputs are opto-isolated.
Warning: It is the responsibility of the customer to insure machine safety. Changing the
mode of operation from any source (front-panel switchpad, fieldbus, or Discrete Isolated
Inputs) can cause machine motion.
Note: All discrete isolated inputs are opto-isolated, including the AUXILIARY input. If your
application requires a non-isolated AUXILIARY input, then set parameter 72 to 1. Refer to
page 17 for more information about setting controller parameters.
Electrical Specifications:
Discrete Isolated Inputs (per input)
On-state voltage (activated) 12 VDC minimum
24 VDC nominal
31 VDC maximum
On-state current (activated) 5.0 mA minimum
8.0 mA nominal
14 mA maximum
Off-state voltage (deactivated) 2.7 VDC maximum
Input impedance 2.2 K-ohms minimum
Isolation 30 VAC max. between any terminal
and ground
Duration (momentary mode only) 100 ms minimum
Operation:
Note: Refer to page 17 for more information about setting controller parameters.
• The control inputs are either maintained or momentary, depending on the setting of
parameter 27.
In the maintained mode, deactivating all inputs will cause the actuator to stop.
In the momentary mode, deactivating all inputs will cause the system to remain in the last
valid operating mode. If the system is in Manual mode, deactivating all inputs will cause
the actuator to stop. The IN and OUT inputs must be maintained in order to move the
actuator.
• The function of the AUXILIARY, EDGE A, EDGE B, and LINE / CENTERLINE inputs
depends on the setting of parameter 51 and 52.
• The INHIBIT input overrides all Discrete Isolated Inputs. To allow the Discrete Isolated Inputs
to operate properly, the INHIBIT input must be inactive.