Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 535)

I/O Interface
Section 10A
10A-12
Power Source Specifications
Table 10A.F lists the power requirements for the push-button MTB panel
I/O module.
Table 10A.F
MTB Panel I/O Module Power Requirements
Item Specifications
Rated Input Voltage 12 V dc
Input Voltage Range 11.5 - 13.2 V dc
Power Consumption 1.3A Typ., 2.6A Max.
External Connection Terminal Block
Input Specifications
Table 10A.G lists the input specifications for the circuits that receive the
signals from the pushbuttons and the selector switches on the push-button
MTB panel.
Table 10A.G
Push-Button MTB Panel I/O Module Input Specifications
Item Specifications Remark
A-B MTB Panel Custom MTB Panel
Number of Input Points 54 44 Total input signals from all switch groups
Modal Group 19
Discrete I/O 18
Rotary Input 8
Interconnect Group 6
Unused 3
All MTB Panels
Operating Voltage
ON
11.5 to 13.2 V dc
OFF 0-2V dc
Allowable Voltage Drop Less than .5V dc For External Device
Input Impedance 2.25 K ohms
Input Current at ON 5mA With 12V dc Input
Leakage Current at OFF Less than 1mA
Response 1-22 msec. Includes Digital Filter Time OFF ® ON, ON ® OFF
Number of Common Points 6 (per 44 inputs) Internally connected to Power Supply
Fuse 3A Protects 12V Power Supply
Isolation Non-Isolated type
Connection 60 Pin flat cable connector (CN51) Max. Length 1m
10A.2.2
Push-Button MTB Panel I/O
Module Specifications