TB Wood's WFC1000 Series, Installation, Operation And Maintenance Instructions

Page: 23 / 82

15
2.8 Function and Use of Terminals
A. Power Circuit Terminals
The power terminals are located on the WFC HT Power Board and are labeled L1, L2, and L3 for incoming
three phase AC line power, (L1 and L3 for single phase models), and M1, M2, and M3 for the motor
connections. Two other terminals B+ and B- provide access to the DC bus plus and minus rails for the
addition of external dynamic braking kits, or extra bus capacitors for custom applications. GND is located
in the lower left-hand internal corner of the control casting. It is a green screw with brass cup washer and
must be connected to earth ground in accordance with the NEC and CEC.
B. Control Terminals
The control terminals are located on the bottom edge of the inverter’s control board. (See Figure 2.8.)
These terminals are available for use with external control devices if remote operation is desired.
NOTE: All control terminals are isolated from earth ground. Do not exceed 50 VAC potential
between any terminal and GND.
1. Control terminal impedance:
a. VIN Terminal – 100 k
Ω
b. CIN Terminal – 237
Ω
c. All Logic Terminals – 4.5 k
Ω
2. Logic input levels:
a. ACTIVE – 10 to 30 VDC
b. INACTIVE – 0 to 5 VDC
The input logic will accommodate either 12 or 24 VDC logic signals.
C. Input Terminal Usage
All WFC HT Series units are shipped from the factory programmed for Keypad only control. BEFORE
USING THE INPUT TERMINALS FOR CONTROL, PARAMETERS 21-MODE AND 24-FSEL SHOULD
BE READ AND UNDERSTOOD. See Section 6 – Applications for typical connections.
FIGURE 2.8
C P U A C T IV IT Y L E D
P O W E R T E R M IN A LS
C O N T R O L
T E R M IN A LS
J6
J7 O P T IO N
C O N N E C T O R
J11
0-2V
0-10V
L1 L 2 L3 B + B - M 1 M 2 M 3
RLY
BU S
C HG
ME
T
CO
M
CI
N
CO
M
VI
N
RE
F
LI
M
CO
M
CO
M
FWD RE
V
+2
4
+2
4
R/
J
PS
1
PS
2
PS
3
AR
T
MO
L
RS
T
ST
1
ST
2
ST
3
6F
S
SI
O
+
SI
O-
CT
S
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com