Wintriss ShopFloorConnect SMI 2, Installation Manual

Page: 23 / 44

SFC Machine Interface (SMI 2) Installation Manual 1146400
Chapter 2
– Installation
23
To make wiring connections, run the input wires you intend to use through flexible liquid tight
conduit and one of the left-side knockouts in the bottom of the enclosure or to the appropriate location
on your console. If you ordered the enclosure, it is rated NEMA 12 (protected against dust and oil),
and you must use NEMA-12-rated conduit and make proper connections to ensure NEMA 12
protection.
NOTICE
These inputs on TB2 are factory set as PNP.
To change all of them to NPN, move the jumper on TB3 pin 1 to +24VDC.
Wiring a Cycle Input
The Cycle input allows the SMI 2 to receive a signal whenever the machine cycles, incrementing the
Good Parts Counter each time the input transitions from low (approximately 0 VDC) to high
(+24 VDC).
The Cycle input signal can come directly from the machine controller if it transitions from 0 to
+24VDC. If a control signal at a different voltage level is available, you can add a user-supplied relay
to operate the Cycle input. Connect the relay so that its coil is actuated by your control signal, and
then wire the relay’s normally open contacts as follows:
1. Connect one wire to input Pin 1 on connector TB2 (see Figure 2-7).
2. Connect the other wire to Pin 5 on connector TB2 (+24 VDC).
Figure 2-7. SMI 2 Input/Output Wiring
If no appropriate control signal is available, you can use a separate user-supplied electronic sensor
such as a proximity or photoelectric sensor to provide the Cycle input signal. The sensor should be
installed in a location where it can sense the completion of a machine cycle and/or actuate each time a
part is made. The sensor should be a PNP solid-state device. If the monitored machine is used in high-