1146400
SFC Machine Interface (SMI 2) Installation Manual
24
Chapter 2
– Installation
speed applications of greater than 300 cycles per second, the Cycle input should operate with a 50%
duty cycle.
You need three wires for the machine Cycle Sensor connections: an output wire, a ground wire, and a
24 VDC power wire. To wire the sensor, do the following:
1.
Connect the PNP Output wire to input Pin 1 on connector TB2.
2.
Connect the Ground wire to the input Pin 2 on connector TB3.
3.
Connect the Power In wire to Pin 5 on connector TB2 (+24 VDC).
No settings are required for the Cycle input, but there are three optional settings. For instructions in
how to make these settings see
Configuring the Cycle Input
in your user manual and
Cycle Input
Setup
in the addendum:
•
You can add a delay time to the actuation of the Cycle Sensor, enabling you to make accurate
parts counts when multiple sensor actuations occur during a single cycle.
•
You can configure the units/time (e.g., cycles/min, feet/hr, etc.) in which the production rate
is calculated and the number of Cycle input pulses that produce each unit.
•
If you wire and enable a Run/Idle contact, SMI 2 by default reports a Running state when the
Cycle Sensor actuates following actuation of the Run/Idle contact. You can change this
setting so the SMI 2 reports that the machine is running when only the Run/Idle contact
actuates.
•
If you do not wire a Run/Idle contact, you can configure the SMI 2 to use the Cycle input to
determine when the machine is running by setting the Production Idle Timer.
Wiring a Run/Idle Input
The Run/Idle input enables the SMI 2 to detect when the machine is running and when it is stopped.
Whenever this input is high (i.e., +24 VDC), the SMI 2 detects that the machine is running (i.e., in the
Running state) and reports that status to SFC. Whenever the input is low (i.e., 0 VDC), the SMI 2
detects that the machine is stopped (i.e., in the Idle state) and reports an Idle status to SFC unless a
downtime reason is selected.
To wire a Run/Idle contact input using a dry contact, connect one wire to input Pin 2 on connector
TB2 and the other wire to input Pin 5 on TB2 (see Figure 2-7, page 23).
You must enable the Run/Idle input in order for the SMI 2 to use it to detect changes in machine state.
When the input is enabled, you can stipulate that the Cycle input must actuate after the Run/Idle input
actuates in order for the SMI 2 to report that the machine is in the Running state. Instructions in how
to make these settings are provided in
Configuring the Run/Idle Input,
in your user manual and in the
addendum
Enable Inputs
and
Run/Idle Setup
.
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