Computer Monitor User Manual
ACM100 User’s Manual
a. Connect the black wire to pin 7 (I
A+
) on the ACM100
b. Connect the white wire to pin 8 (I
A-
) on the ACM100
c. Disconnect the hot wire from the AC power source and place it through the hole in
the Current Sensor such that the arrow on the Current Sensor points towards the AC
power source. Then, reattach the hot wire to the AC source.
Step 3: You must supply a cable for connecting the voltage sense pins on the ACM100 to the
AC source. For the purposes of these instructions, we will assume that the cable has one black
conductor and one white conductor. Install the voltage sense cable as follows:
a. Connect the white wire from one end of the Voltage Sense cable to pin 4 (V
ANeutral
)
on the ACM100.
b. Connect the white wire from the other end of the Voltage Sense cable to the neutral
wire of the AC source being monitored.
c. Connect the black wire from one end of the Voltage Sense cable to pin 1 (V
ALine
) on
the ACM100
d. Connect the black wire from the other end of the Voltage Sense cable to a fuse
appropriately sized for the black wire (18 gauge wire minimum and 3 amp fuse or
less).
e. Connect the other end of the fuse to the AC source hot wire (the fuse should be
placed within 6 inches of the connection to the hot wire).
2.4.2.2 Single-Phase (Phase A, B) Connection
Please refer to Figure 4 for connecting the ACM100 to a single phase, dual line system.
Current
Trans
former
Page 6 Revision 1.2
Figure 4 – Single-Phase (Dual Line) Connection Diagram
Use the following instructions when you are connecting the ACM100 to a single-phase circuit
connected via two hot wires. You will need to install two current transformer and two user-
supplied voltage sense cables. The ACM100 comes with a single current transformer so you
V
A
Line
V
A
Neutral
V
B
Line
V
C
Line
V
B
Neutral
V
C
Neutral
I
A+
I
A-
I
B+
I
B-
I
C+
I
C-
Line (Phase A)
Neutral
U.S.
120 Volts
60Hz
+
-
Europe
220 Volts
50Hz
+
-
AC Source
1 2 543 6789101112
Fuse
Current
Transformer
ACM100 Screw Terminals
Fuse
Line (Phase B)