EPS Stromversorgung 06230204, Руководство по эксплуатации, Страница: 51 / 66

Page 51
EPS Stromversorgung GmbH
Alter Postweg 101 • 86159 Augsburg
Germany
Fon: +49 821 / 570451-0
Fax: +49 821 / 570451-25
www.eps-germany.de
info@eps-germany.de
PS 9000 2U Series
3.5.4.3 Resolution and sample rate
The analog interface is internally sampled and processed by a digital microcontroller. This causes a limited resolu-
tion of analog steps. The resolution is the same for set values (VSEL etc.) and actual values (VMON/CMON) and
is 26214. Due to tolerances, the truly achievable resolution can be slightly lower.
There is furthermore a max. sample rate of 500 Hz. It means, the device can acquire analog set values and states
on digital pins 500 times per second.
3.5.4.4 Analog interface specification
Pin Name Type* Description Default levels Electrical specification
1 VSEL AI Set voltage value
0…10 V or. 0...5 V corre-
spond to 0..100% of U
Nom
Accuracy 0-5 V range: < 0.4% *****
Accuracy 0-10 V range: < 0.2% *****
Input impedance R
i
>40 k...100 k
2 CSEL AI Set current value
0…10 V or. 0...5 V corre-
spond to 0..100% of I
Nom
3 VREF AO Reference voltage 10 V or 5 V
Tolerance < 0.2% at I
max
= +5 mA
Short-circuit-proof against AGND
4 DGND POT Ground for all
digital signals
For control and status signals.
5 REMOTE DI
Switching internal /
remote control
Remote = LOW, U
Low
<1 V
Internal = HIGH, U
High
>4 V
Internal = Open
Voltage range = 0…30 V
I
Max
= -1 mA bei 5 V
U
LOW to HIGH typ.
= 3 V
Rec’d sender: Open collector against DGND
6 OT DO Overheating or
power fail*** alarm
Alarm OT= HIGH, U
High
> 4 V
No Alarm OT= LOW, U
Low
<1
V
Quasi open collector with pull-up against Vcc **
With 5 V on the pin max. flow +1 mA
I
Max
= -10 mA at U
CE
= 0,3 V
U
Max
= 30 V
Short-circuit-proof against DGND
7 - - - - -
8 PSEL AI Set power value
0…10 V or. 0...5 V corre-
spond to 0..100% von P
Nom
Accuracy 0-5 V range: < 0.4% *****
Accuracy 0-10 V range: < 0.2% *****
Input impedance R
i
>40 k...100 k
9 VMON AO Actual voltage
0…10 V or. 0...5 V corre-
spond to 0..100% von U
Nom
Accuracy < 0.2% at I
Max
= +2 mA
Short-circuit-proof against AGND
10 CMON AO Actual current
0…10 V or. 0...5 V corre-
spond to 0..100% von I
Nom
11 AGND POT Ground for all
analog signals
For -SEL, -MON, VREF Signals
12 - - - - -
13 REM-SB DI
DC output OFF
(DC output ON)
(ACK alarms ****)
Off = LOW, U
Low
<1 V
On= HIGH, U
High
>4 V
On = Open
Voltage range = 0…30 V
I
Max
= +1 mA at 5 V
Rec’d sender: Open collector against DGND
14 OVP DO Overvoltage alarm Alarm OV = HIGH, U
High
> 4 V
No alarm OV = LOW, U
Low
<1 V Quasi open collector with pull-up against Vcc **
With 5 V on the pin max. flow +1 mA
I
Max
= -10 mA at U
CE
= 0,3 V, U
Max
= 30 V
Short-circuit-proof against DGND
15 CV DO Constant voltage
regulation active
CV = LOW, U
Low
<1 V
CC/CP = HIGH, U
High
>4 V
* AI = Analog Input, AO = Analog Output, DI = Digital Input, DO = Digital Output, POT = Potential
** Internal Vcc approx. 14.3 V *** Mains blackout, mains undervoltage or PFC error **** Only during remote control
***** The error of a set value input adds to the general error of the related value on the DC output of the device