MKS 253B-1-2CF-1, Instruction Manual

Page: 28 / 54

Interface Cables Chapter Two: Installation
20
Interface Cables
As of January 1, 1996, most products shipped to the European Community must comply with the
EMC Directive 89/336/EEC, which covers radio frequency emissions and immunity tests. In
addition, as of January 1, 1997, some products shipped to the European Community must also
comply with the Product Safety Directive 92/59/EEC and Low Voltage Directive 73/23/EEC,
which cover general safety practices for design and workmanship. MKS products that meet
these requirements are identified by application of the CE Mark.
To ensure compliance with EMC Directive 89/336/EEC, an overall metal braided shielded cable,
properly grounded at both ends, is required during use. No additional installation requirements
are necessary to ensure compliance with Directives 92/59/EEC and 73/23/EEC.
Note
1. Overall metal braided shielded cables, properly grounded at both
ends, are required to meet CE specifications.
2. To order metal braided shielded cables, add an “S” after the cable
type designation. For example, to order a standard cable to connect
the 253 unit to a Type 651 controller, use part number CB651-30-x;
for a metal braided shielded cable, use part number CB651S-30-x
(where x = length in feet).
System Interface Cables
The system interface cables include cables to connect the 253 unit to a controller, or to retrofit
the unit into an existing system.
System Interface Cables
To Connect the 253 Unit To... Use the MKS Cable...*
Standard Shielded
651, 652, 152G CB651-30-x CB651S-30-x
252D, 252E CB252-16-x CB252S-16-x
Existing System** CB651-31-1 CB651S-31-1
* x = length in feet
** If you are retrofitting the 253B valve into an existing system with hex connector cables, an
adapter cable is required. Use adapter cable CB651-31-1 to replace the 253A valve with the
253B valve.
Table 5: System Interface Cables