Taco® SKV
15
• Depending on the configuration of the equipment,
input power will be connected to the line power input
terminals or the input disconnect.
Figure 8-11: Connecting to AC Line Power
• Ground the cable in accordance with grounding
instructions provided in “8.3 Grounding Require-
ments” on page 12.
• All adjustable frequency drives may be used with an
isolated input source as well as with ground refer-
ence power lines. When supplied from an isolated
line power source (IT line power or floating delta) or
TT/TN-S line power with a grounded leg (grounded
delta), set 14-50 RFI 1 to OFF. When off, the internal
RFI filter capacitors between the chassis and the
intermediate circuit are isolated to avoid damage to
the intermediate circuit and to reduce ground capac-
ity currents in accordance with IEC 61800-3.
8.3.7 Control Wiring
Isolate control wiring from high power components in the
adjustable frequency drive.
If the adjustable frequency drive is connected to a therm-
istor, for PELV isolation, optional thermistor control wiring
must be reinforced/ double insulated. A 24 VDC supply
voltage is recommended.
Access
Remove access coverplate with a screwdriver. See “Fig-
ure 8-12: Control Wiring Access for A2, A3, B3, B4, C3
and C4 Enclosures” on page 15.
Or remove front cover by loosening attaching screws.
See “Figure 8-13: Control Wiring Access for A4, A5, B1,
B2, C1 and C2 Enclosures” on page 15.
302-365, Effective: June 5, 2017
© 2017 Taco, Inc.
Figure 8-12: Control Wiring Access for A2, A3,
B3, B4, C3 and C4 Enclosures
Figure 8-13: Control Wiring Access for A4, A5,
B1, B2, C1 and C2 Enclosures
Please see the table below before tightening the covers.
Table 1: Tightening Torques for Covers (Nm)
Frame IP20 IP21 IP55 IP66
A4/A5 - - 2 2
B1 - * 2.2 2.2
B2 - * 2.2 2.2
C1 - * 2.2 2.2
C2 - * 2.2 2.2
* No screws to tighten
- Does not exist
To Next Page
Loading...
