02001026
Rev 1 ECO 7062
Operation Manual:
LDD-100/150/250-XX-YY
Page 10 of 13
3.
INTERFACE INFORMATION BEFORE APPLYING AC POWER:
The
unit may be programmed for output current via Pin-7, the
Iprogram
function. But
there are three interface control signals which must be properly set before the
output will deliver current as programmed by Iprogram.
a.
INTERLOCK
:
Pin 3, the
Interlock
,
must be grounded via Pins 4, 9 or 15
in order for the output to deliver current.
b.
ENABLE
: Pin 1, the
ENABLE
signal is a 5V to 24V signal used to turn
the output section on. The
ENABLE
circuitry incorporates a soft start
function which ensures rise times of approximately 15 to 20msec.
Response of Iout to ENABLE signal
c.
Iprogram:
Pin 7. A 0-10V signal results in 0 to Iout
max
, as long as the
rated compliance voltage of the driver is not exceeded.
4.
Operating the LDD
a.
AC INPUT POWER CONNECTION
Connect AC power connections to
power supply input power terminals as follows (refer to Figure 3.):.
•
Neutral wire (16AWG) connected to the right contact of the AC
input terminal (labeled N).
•
Line wire (16AWG) connected to the left contact of the AC
terminal block.
•
Ground wire shall be crimped to a # 8 ring-lug and connected to the
ground stud.
IMPORTANT NOTE
Make sure when connecting interface that the current program setting,
Ip)
, is set no higher then the value required for operation. When AC
power is applied and system is
Enabled
, output current will rise to this
program value
IMPORTANT APPLICATON NOTE REGARDING AC INPUT POWER
AC Input wires should be at least #16 AWG, rated for at least 300V and
105DegC.
CH 1
Iout
20A/div
CH 2
ENABLE
