TCI HG7 - Manual (Page 28)

P O W E R M O N I T O R P A C K A G E O N L Y
POWER MONITOR OPTION HG7 I, O, & M Manual 26
Connection Diagram
Figure 3 shows the typical wiring connections between the HG7 and the drive. Refer to the drawings
furnished with the HG7 for more specific information. Refer also to the instructions for the drive and
other equipment to which the Enable Input and the Fault Alarm contact are connected.
Figure 3
–
Typical Connection Diagram
For HG7 Harmonic Filters with the “XM” Option:
When connecting input power conductors directly to the input line reactors in the HG7 “XM”
Option units, the conductors must be passed through the current transformers that are provided
for use by the HG2 Protection Monitor. Units below 75 kVar and above 120 kVar do not have
current transformers.
Control Wiring
Connect the HG7 “XM” Option Filter Enable input (terminals 1 and 2) to an auxiliary N.O. Run
contact in the adjustable speed drive. Connecting a Drive Aux Run contact will automatically connect
the HG7 whenever the drive is running. If a jumper is connected between terminals 1 and 2, the HG7
will be connected whenever the drive branch circuit power disconnect device is closed. Connect the
HG7 Fault Alarm relay contacts to the appropriate fault monitoring circuit. It may be connected to the
drive or to some supervisory control or alarm annunciation equipment. The fault contact is part of the
HG2 Protection Monitor, which is provided as standard in HG7 “XM” Option units larger than 20
kVar.