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Manual Control Pendant Basics
Adept SmartController User’s Guide, Rev. E 
127
MCP-4 Compatibility
The MCP-4 has a dual-channel (four-wire) E-Stop circuit where the switch contacts are in 
parallel. This is different from the MCP III where the switch contacts are in series. This 
difference affects how the MCP-4 is used in various Adept systems. 
 covers the 
compatibility status for the MCP-4.
Table C-1. MCP-4 Compatibility Guidelines
In Adept systems rated for Category 1 Safety
In MV Controller-based 
systems with CIP2, CIP1, or 
VFP
MCP-4 is compatible, no issues
In SmartController-based 
systems
In systems that are shipped from the factory with an MCP-4, there are 
no compatibility issues.
If you are installing an MCP-4 in a system that originally used an MCP 
III, then Adept recommends removing 10356-10370, CIM TO MCPIII 
Adapter for reliability, but not for compliance reasons.
In Adept systems rated for Category 3 Safety (CE: Redundant Channel, RIA: Control Reliable)
In MV Controller-based 
systems with CIP2 or CIP1
To maintain a dual contact enable in CE Category 3 Emergency Stop 
systems, remove jumper JP3 inside CIP. 
In MV Controller-based 
systems with VFP3
MCP-4 not compatible. Cannot maintain a dual contact enable with the 
MCP-4, must use MCP III.
In SmartController-based 
systems
In systems that are shipped from the factory with an MCP-4, there are 
no compatibility issues.
If you are installing an MCP-4 in a system that originally used an MCP 
III, then you must remove 10356-10370, CIM TO MCPIII Adapter. This 
must be done for compliance reasons in order to maintain a dual 
contact enable in CE Category 3 Emergency Stop systems.