heinzinger ERS Compact Series, User Manual, Page: 72 / 114

Heinzinger electronic GmbH
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Germany
Page 72
ERS COMPACT
3.6.4.3 Resolution
The analog interface is internally sampled and processed by a digital micro-controller. This causes a limited resolution
of analog steps. The effective resolution is the same for set values (VSEL etc.) and actual values (VMON/CMON).
It’s 26214 steps when working with the 10 V range. In the 5 V range this resolution halves. Due to tolerances, the
truly achievable resolution can be slightly lower.
3.6.4.4 Overview of the D-sub socket
3.6.4.5
Analog interface specification
Pin Name Type* Description Default levels
Electrical specifications
1 VSEL AI Voltage set 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
Current set value
(source & sink)
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
digital signals
For control and status signals
5
REMOTE
DI
Switches between
manual and remote
control
Remote = LOW, U
Low
<1 V
Manual = HIGH, U
High
>4 V
Manual, if pin not wired
Voltage range = 0…30 V
I
Max
= -1 mA at 5 V
U
LOW to HIGH typ.
= 3 V
Rec’d sender: Open collector against DGND
6
ALARMS 1
DO
Overheating /
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 RSEL AI
Resistance value
(source & sink)
0…10 V or 0...5 V correspond
to R
Min
...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
Power set value
(source & sink)
0…10 V or 0...5 V correspond
to 0..100% of P
Nom
9
VMON
AO Actual voltage
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% *****
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% of I
Nom
******
11 AGND POT
Ground for all
analog signals
For xSEL, xMON and VREF
12 R-ACTIVE DI
R mode on / off
Off = LOW, U
Low
<1 V
On = HIGH, U
High
>4 V
On, if pin not wired
Voltage range = 0…30 V
I
Max
= -1 mA at 5 V
U
LOW to HIGH typ.
= 3 V
Rec’d sender: Open collector against DGND
13
REM-SB
DI
DC terminal OFF
(DC terminal ON)
(ACK alarms ****)
Off = LOW, U
Low
<1 V
On = HIGH, U
High
>4 V
On, if pin not wired
Voltage range = 0…30 V
I
Max
= +1 mA at 5 V
Rec’d sender: Open collector against DGND