page 5 MANUAL May 2008
DELTA ELEKTRONIKA BV PSC SERIES
Status Weight Name
11 CC
2 2 LIM
3 4 DCF
4 8 ACF
516 OT
6 32 PSO
7 64 InpA
8 128 InpB
User logic in/outputs for external PSC-488 module
and PSC-232 module
6.6 Analog inputs
The analog inputs can be individually read.
Calibration is done by software. Settings
can be saved in non-volatile memory.
Analog in- and outputs have a common
zero
• Full scale software adjustment
• 2 x analog input channels with 16 bit
ADC Input range 0 to 5 V
• Offset software adjustment
• Resolution 0.1 mV / 5 V input
• Linearity error +/- 2 LSB
• TC typical 5 ppm / °C
Read Back Resolution
The read back resolution depends on the
voltage and current range of the power
supply that is used with the PSC.
Example with power supply SM52-30:
The voltage range is 52 V. After
programming the unit to 50 V, the read
back value has 3 decimals, see table;
V
readback = 50.000 V. The 3 digits after the
decimal point give a resolution of 1 mV.
This means that for 50 V the number of
steps is 50000. From the next table it can
be seen that the resolution is better than
15 bit.
Analog in/ outputs
Range Decimals
0 - 5.9999 4
6.000 - 59.999 3
60.000 - 599.99 2
Bit Steps
12 4096
13 8192
14 16384
15 32768
16 65536
6.8 Logic inputs
The PSC-488 module and the PSC-232 module
provide two 1000 V opto isolated logic inputs, InpA
and InpB for custom use.
The inputs are 470 ohm, Logic high = 2.5 ... 8 V
(15 mA max), Logic low = 0 V.
The two inputs have a common zero.
The maximum reverse voltage = 6 V.
6.9 Logic outputs
The PSC-488 module and the PSC-232 module
also provide two opto isolated logic outputs for
custom use: OutA and OutB.
The opto coupler outputs have an open collector
and a common zero. The maximum voltage is 50 V
and the maximum current is 5 mA.
Total power dissipation = 150 mW.
6.7 Status monitoring
The PSC provides TTL /CMOS compatible status
inputs for monitoring signal changes and fail signals
of the power-supply as CC mode, Current or
Voltage Limit, DC Fail, AC Fail and Over
Temperature. See power supply manual.
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