Cleveland Motion Controls Classic Series Intrinsically Safe Barrier Block Kit MO-13904-2 REV AA - Manual (Page 7)

AO-90360 R EV . AA C LASSIC S ERIES I NTRINSICALLY S AFE B ARRIER B LOCK K IT
P AGE 7 OF 10
2.2 M OUNTING THE B ARRIER B LOCKS
The barrier blocks are attached to a Din Rail which is isolated from the main mounting surface by isolation blocks.
The isolation blocks are required per section 5.3 in the MTL INM7700 instruction manual.
Figure 1 –Mounting Diagram
2.3 E LECTRICAL C ONNECTIONS AND W IRING
The intrinsically safe barrier blocks are connected to the Cleveland-Kidder Classic Series Tension Transducers and
control equipment or an Classic Din Rail Amplifier as shown in figure 2a for single transducers such as the CLT
style and figure 2b for dual transducers. There are additional wiring requirements for the IS barrier blocks such as
the Isolated Earth Ground that are described in more detail in the MTL INM7700 Instruction Manual that need to be
connected properly to ensure Intrinsically Safe compliance.
Also make certain that:
• The cables do not interfere with the web path, and that they are away from gearing or other moving
parts.
• You exercise care when routing the cables to avoid pick-up from noise-radiating power cabling (motor
armature leads, AC main wiring, etc).
• In environments with severe electromagnetic noise, it may be necessary to route the cables inside
metallic conduit.