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installation
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50  Mentor MP User Guide
www.controltechniques.com                     Issue: 3
Table 4-24 Fan supply specification
Cabling should be 300V rated. Rated for at least 3A continuous in line 
with local wiring regulations. Cabling should be protected 3A non time 
delay fuses i.e. gG, Class CC or Class J and rated for at least 300V, in 
accordance with local wiring regulations.
4.13      Control connections
Refer to Figure 4-20 to understand the connection of the different power 
connections.
4.13.1     General
Table 4-25 The control connections consist of:
Key:
All analog terminal functions can be programmed in menu 7.
All digital terminal functions (including the relays) can be programmed in 
menu 8.
The setting of Pr 6.04 can cause the function of digital inputs T25 to T27 
to change. For more information, refer to section 11.22.5 Start / stop 
logic modes on page 143.
Table 4-26 Control connection recommended cable sizes
Fan configuration Supply specification
230V 230V ±10%
115V 115V ±10%
Function Qty Control parameters available
Terminal 
number
Differential analog input 1
Destination, offset, invert, 
scaling
5,6
Single ended analog 
input
2
Mode, offset, scaling, invert, 
destination
7,8
Analog output 2 Source, mode, scaling, 9,10
Digital input 3 Destination, invert, logic select 27, 28, 29
Digital input / output 3
Input / output mode select, 
destination / source, invert, 
logic select 
24, 25, 26
Relay 2 Source, invert
51, 52, 53
61, 62, 63
Drive enable  1 Logic select 31
+10V User output 1 4
+24V User output 1 22
0V common 6
1, 3, 11, 21, 
23, 30
+24V External input 1 2
Destination 
parameter:
Indicates the parameter which is being controlled by the 
terminal / function
Source 
parameter:
Indicates the parameter being output by the terminal
Mode 
parameter:
Analog - indicates the mode of operation of the terminal, 
i.e. voltage 0-10V, current 4-20mA etc.    
Digital - indicates the mode of operation of the terminal, 
i.e. positive / negative logic, open collector.
If the control circuits are to be connected to other circuits 
classified as Safety Extra Low Voltage (SELV) (e.g. to a 
personal computer), an additional isolating barrier must be 
included in order to maintain the SELV classification.
If any of the digital inputs (including the drive enable input) 
are connected in parallel with an inductive load (i.e. 
contactor or motor brake) then suitable suppression (i.e. 
diode or varistor) should be used on the coil of the load. If no 
suppression is used then over voltage spikes can cause 
damage to the digital inputs on the drive.
The control circuits are isolated from the power circuits in the 
drive by basic insulation (single insulation) only. The installer 
must ensure that the external control circuits are insulated 
from human contact by at least one layer of insulation 
(supplementary insulation) rated for use at the AC supply 
voltage.
Status relay contacts are over-voltage category II. 
A fuse or other over-current protection should be installed to 
the relay circuit.
Terminal Minimum cable size Maximum cable size 
Machine armature 
0.5mm
2
  20 AWG
5mm
2
  10 AWG
Auxiliary
Control I/O
1.31mm
2 
 16 AWG 
Encoder 
Tachogenerator
2.5mm
2 
 12 AWG 
Status relays