User manual

Page 56
PSI 9000 DT Series
www.elektroautomatik.de
[e-mail]
EA Elektro-Automatik GmbH
Helmholtzstr. 31-33 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
3.5.4.3 Acknowledging device alarms
Device alarms (see 3.6.2) are always indicated in the front display and some of them are also reported as signal on
the analog interface socket (see 3.5.4.4), for example the overvoltage alarm (OV), which is considered as critical.
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. While alarms OT and OV can be monitored via the corresponding pins of the
interface, other alarms like power fail (PF) can’t. Those could only be monitored and detected via the actual values
of voltage and current being all zero contrary to the set values.
Some device alarms (OV, OCP and OPP) have to be acknowledged, either by the user of the device or by the
controlling unit. 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. 50ms for LOW).
3.5.4.4 Analog interface specication
Pin Name Type* Description Levels Electricalspecication-
1 VSEL AI Set voltage value
0…10 V or. 0...5 V correspond
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 correspond
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 OT DO
Overheating alarm
or Power Fail
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.ow+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 correspond
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 correspond
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 correspond
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 correspond
to 0..100% von 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 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.ow+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/CR = 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 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