ROBERTS GORDON
®
ULTRAVAC™ C
ONTROLLER
I
NSTALLATION
M
ANUAL
10
FIGURE 3: Variable Frequency Drive Components (Factory pre-wiring shown)
M16/12.P
M16/12.P
Po
w
er Inp
u
t
1
2
5
6
11
13A
13B
13E
25
16
17
PE
PE
W
V
U
L2/N
L1
B-
PE
B+
V
aria
b
le
Fre
qu
ency Dri
v
e
(1 Ø inp
u
t model sho
w
n)
Terminal Inp
u
ts
230
V
3 Ø or
460
V
3 Ø o
u
tp
u
ts
Gro
u
nding
Block
120
V
signal from relay
b
oard
o
u
tp
u
t #
8
Relay
120
V
Rotary
Disconnect
Input Fuse Holder
(1 Ø input model shown, 3 Ø input models have an
additional input fuse holder and VFD power input.)
VFD Enclosure
(Standard Enclosure Shown)