KB Electronics KBRC-240D - Manual (Page 17)

K. Enable Jumper (J11) – Jumper J11 is fac-
tory installed to enable the control. If
installing the Enable Circuit, as described
in Section IIJ, on page 13, remove Jumper
J11. See Figure 27.
IV. MOUNTING INSTRUCTIONS
Warning! The KBRC-240D is not designed to be used in an explosion-proof appli-
cation.
It is recommended that the control be mounted vertically on a flat surface with adequate ven-
tilation. Leave enough room below the control to allow for AC line, motor connections and
any other wiring. Although the control is designed for outdoor and wash down use, care
should be taken to avoid extreme hazardous locations where physical damage can occur. If
the control is mounted in a closed, unventilated location, allow enough room for proper heat
dissipation. If operating the control at full rating, a minimum enclosure size of 12”W X 24”H
X 12”D is required. See Figure 3, on page 8.
V. RECOMMENDED HIGH VOLTAGE DIELECTRIC WITHSTAND TESTING (Hi-Pot Testing)
Testing agencies such as UL, CSA, VDE, etc., usually require that equipment undergo a hi-
pot test. In order to prevent catastrophic damage to the speed control, which has been
installed in the equipment, it is recommended that the following procedure be followed.
Figure 28 shows a typical hi-pot test setup.
Note: All equipment AC line inputs must be disconnected from the AC power.
A. Connect all equipment AC power input lines together and connect them to the H. V. lead
of the hi-pot tester. Connect the RETURN lead of the hi-pot tester to the frame on which
the control and other auxiliary equipment are mounted.
B. The hi-pot tester must have an automatic ramp-up to the test voltage and an automatic
ramp-down to zero voltage.
Note: If the hi-pot tester does not have automatic ramping, then the hi-pot output must
be manually increased to the test voltage and then manually reduced to zero. This pro-
cedure must be followed for each machine tested. A suggested hi-pot tester is Slaughter
Model 2550.
WARNING! Instantaneously applying the hi-pot voltage will cause
irreversible damage to the speed control.
17
FIGURE 27 – ENABLE JUMPER
!
!
2 1
3 0
AC KILOVOLTS
RETURN
H. V.
(MAIN POWER DISCONNECTED)
TERMINALS TOGETHER
CONNECT ALL SPEED CONTROL
HIGH VOLTAGE DIELECTRIC WITHSTAND TESTER
MOTOR SPEED CONTROL
(HI-POT TESTER)
SIG
SIGNAL INPUTS
TERMINALS
L1
L2
FRAME
CHASSIS CHASSIS
MOTOR MOTOR WIRES
AC LINE INPUTS
RESET
TEST
TO BOTH
CONNECT HI-POT
AC LINE INPUT
LEAKAGE
0mA 10mA
MAX ZERO
VOLTAGE
AUXILIARY EQUIPMENT
MACHINE OR EQUIPMENT FRAME
L1
L2
-15V
+15V
COM
FIGURE 28 – HI-POT TEST SETUP
J11 Installed for
Auto-Enable
(Factory Setting)
J11 Not installed for
Manual Enable
EN
J11
EN
J11