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83550001 Revision C
7.2.
Isolated Analog Programming (INA option)
The INA option features galvanically isolated analog voltage/current programming/readback,
and digital control/readback connections. Signals are isolated using fiber optics. The
Accuracy, Linearity, Temperature coefficient and Stability specifications are limited to
±0.01% when programming via the isolated analog interface. If the unit is equipped with
floating return, the isolated analog interface should be specified.
The interface pin connections are similar to the ANA interface except the front panel
potentiometer wipers (pins 4 and 5) are not connected. Details are shown in Table 6 below.
Pin
Signal
Name
I/O
Description
1
CC LED
O
+15V through 10k
when unit is operating in Constant Current mode
2
CV LED
O
+15V through 10k
when unit is operating in Constant Voltage mode
3
I-MON
O
Analog output current monitor signal, scaled 0-10V=0-100% rated
current. Series resistance is 11k
4
N/C
Not connected
5
N/C
Not connected
6
Digital
Ground
Ground for digital circuits, Isolated from chassis to 2,000V
7
POL-SET
I
Polarity set signal for units equipped with optional electronic polarity
reversal. Open=positive polarity, connected to digital ground=negative
polarity.
8
V-SET
I
Output voltage set point, scaled 0-10V=0-100% rated voltage.
Resistance to ground approx. 10M
9
Analog
Ground
Analog ground, Isolated from chassis to 2,000V
10
+10V
O
+10V reference, 2mA max.
11
V-MON
O
Analog output voltage monitor signal, scaled 0-10V=0-100% rated
voltage. Series resistance is 11k
12
HV ON
I
Open=HV OFF, Connect to digital ground=HV ON
13
POL-
Status
O
Output Polarity indicator for units equipped with optional electronic
polarity reversal. +12V=Positive, 0V=Negative.
14
N/C
Not connected
15
I-SET
I
Output current set point, scaled 0-10V=0-100% rated current.
Resistance to ground approx. 10M
Table 6. Isolated Analog Interface Signals (INA option)
Remote operation via the INA interface is the same as the ANA interface. Note that the
control modes described in sections 7.1.2 through 7.1.4 cannot be used.
Summary of Contents for PHV Series
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