MTS Model FlexTest SE - Manual (Page 172)

Models FlexTest® IIm/GT/SE Controller Hardware
Multi-Box I/O Module
FlexTest GT Controller Connections 172
Multi-Box I/O Module
The optional Model 493.43 Multi-Box I/O module allows multiple controllers to
share a master hardware synchronization clock and pass station interlock state
information between each other. In addition, this front panel module also
provides user station interlock inputs and outputs.
Module features
• 4 optically isolated station interlock inputs (J8)
• 4 station interlock outputs with relay contacts (J9)
• Box In (J51) and Box Out (J52) to connect multiple MTS controller boxes to
share station interlock status and the master synchronization clock.
• 32 Mb FLASH disk on board
• Box address switch (software readable) allows you to set a unique address
for each controller in a multi-box chain.
J8 Interlock IN
Connector J8 Interlock IN provides four station interlock inputs that can be
connected to external interlock chains.
• Inputs 1 through 4 are dedicated as a station interlock.
• All inputs are optically isolated.
Electrical
specifications
Refer to the following table for input electrical specifications:
P ARAMETER S PECIFICATION
Input type Contact (Open = Interlock)
Logic (0 = Interlock)
Input debounce time 12-16 msec
Input resistance 2.7 k Ω
Minimum input off voltage 0.8 V (Interlock)
Maximum input voltage 26 V
Minimum input on voltage 3 V @ 1 mA (No Interlock)