9a.4.1.1 mtb i/o module specifications, Power supply specifications, Input specifications – Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set User Manual
Page 500

Section 9A
Operator Interface
9A-33
Power Supply Specifications
Table 9A.N lists the power requirements for the MTB I/O module.
Table 9A.N
MTB I/O Module Power Requirements
Item
Specifications
Rated Input Voltage
12V dc
Power Source Voltage Range
11.5-13.2V dc
Power Consumption
1.3 A typical, 2.6 A maximum
Input Specifications
Table 9A.O lists the input specifications for the circuit that receives the
signals from the pushbuttons and the selector switches on the push-button
MTB panel.
Table 9A.O
MTB 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
9A.4.1.1
MTB I/O Module
Specifications