Elektro-Automatik PSI 9000 DT Series, Operating Manual

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Page 54
EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
ea1974@elektroautomatik.de
PSI 9000 DT Series
3.5.4.3 Acknowledging device alarms
In case of a device alarm occurring during remote control via analog interface, the DC output will be switched
off the same way as in manual control. The device would indicate an alarm (see
3.6.2
) in the front display and, if
activated, acoustically and also signal them on the analog interface. Which alarms actually are signalled can be
set up in the device configuration menu (see
3.4.3.1
).
Some device alarms (OVP, OCP and OPP) have to be acknowledged. Also see „3.6.2. Device alarm and event
handling“. Acknowledgement is done with pin REM-SB switching the DC output off and on again, means a HIGH-
LOW-HIGH edge (min. 50 ms for LOW), when using the default level setting for this pin.
3.5.4.4 Analog interface specification
Pin Name Type* Description 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 digi-
tal 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 ALARMS 1 DO Overheating or
power fail alarm
Alarm= HIGH, U
High
> 4 V
No alarm= 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 RSEL AI
Set internal resist-
ance value
0…10 V or. 0...5 V corre-
spond to 0..100% of R
Max
Accuracy 0-5 V range: < 0.4% *****
Accuracy 0-10 V range: < 0.2% *****
Input impedance R
i
>40 k...100 k
8 PSEL AI Set power value
0…10 V or. 0...5 V corre-
spond to 0..100% of P
Nom
9 VMON AO Actual voltage
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% *****
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% of I
Nom
11 AGND POT Ground for all
analog signals
For -SEL, -MON, VREF signals
12 R-ACTIVE DI R mode on / off
On = LOW, U
Low
<1 V
Off = HIGH, U
High
>4 V
Off = 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
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 ALARMS 2 DO
Overvoltage alarm
Overcurrent alarm
Overpower alarm
Alarm = HIGH, U
High
> 4 V
No alarm = 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 STATUS*** DO
Constant voltage
regulation active
CV = LOW, U
Low
<1 V
CC/CP/CR = HIGH, U
High
>4 V
DC output
On = LOW, U
Low
<1 V
Off = HIGH, U
High
>4 V
* AI = Analog Input, AO = Analog Output, DI = Digital Input, DO = Digital Output, POT = Potential
** Internal Vcc approx. 10 V
*** Only one of both signals possible, see section 3.4.3.1
**** 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