Kikusui PBZ20-20, User Manual

Page: 136 / 170

136
PBZ
Controlling DC Signals (The DC Settings)
p. 87
You can control the DC signal by using voltages that are from 0 V to approximately ±10 V or
by using 10 k

variable resistors. Before using this function, you have to use to
change some settings. In the figure below, the signal source selection is set to “J1.”
Using External Voltage
You can control the internal signal source’s DC signal by using external voltage that is from 0
V to approximately ±10 V. In CV mode, you can control the voltage. In CC mode, you can
control the current. The output is equal to the sum of the setting that is determined by the
external voltage and the DC settings that are set from the panel and remote control.
Connecting an external voltage
Connect an external voltage (Vext) as shown in the following figure.
Connect a low-noise, stable voltage source to Vext. To reduce the influence of noise on the
output, connect a two-wire shielded cable or a twisted pair cable across Vext, and connect
the voltage source so that it is as close to the PBZ as possible. If the wiring between the PBZ
and the voltage source is long, it becomes easy for noise to influence the operation of the
PBZ. Even if you use wires that are designed to suppress noise, the PBZ may not operate
properly.
The relationship between control voltages and the output
The control range differs between bipolar and unipolar modes. For details, see “Using
External Voltage (Control Signal J1)” on page 54.
See
CONFIG
OUTPUT
Chassis terminal
SENSING
PBZ
J1
OUT
COM
OUT
COM
Vext
+
COM
–
Two-wire shielded cable
or a twisted pair cable
25
26
1
2
23
24
J1
23
24
The pin numbers are the socket numbers.
This is the PBZ J1 connector pinout.
CAUTION
• Do not apply a voltage of 10.5 V or greater across the external voltage control pins. Doing
so could damage the PBZ.