3-3
Receiving and Installation
MN715P
Terminal Identification
The terminals for signal, AC power and motor connections are shown in
Figure 3-2. Separate ground connections are provided for power and
motor grounds.
Figure 3-2 Terminal Identification
J4 Control Terminal Strip
J5 Power Terminal Strip
Power
GND
Motor
GND
L1 L2 L3
T1 T2 T3
B−
R2 R1
1
P1
P2
P3
P4
P5
P6
S1 DIP Switch
Potentiometers
P1 − P6
POWER
FAULT
FWD
REV
STOP
0
10
20
30
40
50
60
70
80
90
100
% Speed
AC Line Connections
A power disconnect should be installed between the input power service and
the control for a fail-safe method to disconnect power. The control will remain
in a powered-up condition until all input power is removed from the control and
the internal bus voltage is discharged.
Protective Devices
Recommended fuse sizes are based on the following:
115% of maximum continuous current for time delay.
150% of maximum continuous current for Fast or Very Fast action.
Note: These general size recommendations do not consider harmonic currents or
ambient temperatures greater than 40
°
C.
Be sure a suitable input power protection device is installed. Use the
recommended fuses listed in Tables 3-4 and 3-5 (Wire Size and Protection
Devices). Input and output wire size is based on the use of copper conductor
wire rated at 75
°
C. The table is specified for NEMA B motors.
Fast Action Fuses:
115/230VAC, Buss KTN
460VAC, Buss KTS
Very Fast Action
115/230VAC, Buss JJN
Fuses:
460VAC, Buss JJS
Time Delay Fuses:
115/230VAC, Buss FRN
460VAC, Buss FRS
