58 Mentor MP Short Form Guide
www.controltechniques.com Issue Number: 5
Figure 4-6 Shielded cable assembly
.
4.7.3 Control cables
It is recommended that signal cables should be shielded. This is essential for encoder
cables, and strongly recommended for analog signal cables. For digital signals it is not
necessary to use shielded cables within a panel, but this is recommended for external
circuits, especially for inputs where a momentary signal causes a change of state (i.e.
latching inputs).
4.8 Connecting the fan on size 2C and 2D drives
A supply needs to be connected to the dual fan unit enclosed within the lower duct on
Mentor MP size 2C and 2D. The fans can be configured for a 230 Vac (factory setting)
or 115 Vac supply as shown below on the label next to the fan connections. When
connecting the fan supply, the screws should be tightened with a maximum torque of 1.2
N m (0.88 Ib ft) to 2 N m (1.47 Ib ft).
Figure 4-7 Fan connection
Table 4-21 Fan supply specification
Cabling should be 300 V rated. Rated for at least 3 A continuous in line with local wiring
regulations. Cabling should be protected by 3 A non time delay fuses i.e. gG, Class CC
or Class J and rated for at least 300 V, in accordance with local wiring regulations.
Cable
Cable
shield
Twisted
pair
shield
Cable
shield
Twisted
pair
shield
at motor
Connection
at drive
Ground clamp
on shield
connection
to 0V
Shield
connection
to 0V
Fan configuration Supply specification
230 V 230 V ±10 %
115 V 115 V ±10 %
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