PF1350 TECHNICAL MANUAL REV 1 2/06/14
P1350 with ANALOG REMOTE CONTROL OPTION
-
4065
3.10.1 INTRODUCTION
This option provides a means of controlling the model P1350 output voltage with a 0-10Vdc analog signal.
In addition, the power supply's output range may be set to the high range via a digital input. This interface
provides complete isolation from ground and the power stage of the power supply. An additional terminal
block is fitted to the rear of the power supply chassis.
3.10.2 SPECIFICATIONS
0 To 10VDC Control Input Impedance ............................ 10K ohms minimum
Maximum Input Voltage ................................................+/- 15 VDC
Control Input to Output Linearity ...................................... 1% typical
Control Response Time .....................................................250mS typical
Isolation Voltage ................................................................500 VDC ( 300 VAC 60Hz )
3.10.3 CONTROL TERMINAL ASSIGNMENT ( TB-1 )
POS.
PIN NAME
FUNCTION
TB1-1
VOLTAGE CONTROL
0-10VDC input control output ac voltage.
TB1-2
COMMON
signal return for dc control
TB1-3
RANGE +
8 - 15 VDC set range to 0-270V
TB1-4
RANGE -
8 - 15VDC signal return
APPLICATION INFORMATION
To use the remote control features the front panel
VOLTS
controls
MUST BE
set fully counter clockwise.
The
RANGE
switch must be set to the "LOW" position. Note that the remote input is additive and will
increase the setting of the front panel controls.
Cables used to connect the control circuit to the power source should be shielded to prevent noiseand
electromagnetic interference from entering the remote inputs. A shielded twisted pair is recommended.
Cable shields should be terminated at the control side of the circuit. The maximum length of these cables
is dependent on the control circuit
=
s drive capability. It should be noted that some IC output stages may
become unstable and oscillate when driving long cables with high capacitance. Low output impedance
buffers should be considered when long cable lengths are desired.
The stability and regulation of the P1350 output voltage will be directly affected by the quality of the user
supplied control signals. This must be considered during the design of the control circuitry.
