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© 2006, Elektro-Automatik GmbH & Co. KG
Irrtümer und Änderungen vorbehalten
EN
Instruction Manual
EL 3000 A Series
Date: 05-30-2017
8.4 Pin assignment of the analogue interface
Remote control
Pin Name
Type² Description
Level
Electrical specifications
1 VSEL
AI
Set value for voltage
0…10V, corresponds to 0..100% of U
Nom
Accuracy typically 0.1%
2 CSEL
AI
Set value for current
0…10V, corresponds to 0..100% of I
Nom
Input impedance Ri > 40k…100K
3 PSEL
AI
Set value for power
0…10V, corresponds to 0..100% of P
Nom
4 RSEL
AI
Set value for resistance
0…10V, corresponds to 0..100% of R
Nom
5 AGND
POT
Reference potential for analogue
signals
For VSEL, CSEL, PSEL, RSEL, VMON, CMON,
PMON and VREF
6 DGND
POT
Reference potential for digital signals
For control and error signals
DI
Selection internel / external
External = LOW (U
Low
<1V)
U range = 0 …30V
Internal = HIGH (U
High
> 4V) or open
I
Max
= -1mA at 5V
DI
Load input on/off
OFF = LOW (U
Low
<1V)
U
Low to High typ.
= 3V
ON = HIGH (U
High
> 4V) or open
Sender: open collector against DGND
9 VMON
AO
Actual value of voltage
0…10V correspond to 0..100% of U
Nom
Accuracy typically 0.1% at I
Max
= +2mA
10 CMON
AO
Istwert Strom
0…10V correspond to 0..100% of I
Nom
Short-circuit-proof against AGND
AO
Accuracy typically 0.1% at I
Max
= +5mA
Short-circuit-proof against AGND
DI
Selection R=on / R=off
1
R regulation = off = LOW (U
Low
<1V)
U range = 0 …30V
R regulation = on = HIGH (U
High
> 4V) or open I
Max
= -1mA at 5V
DI
Select resistance range
4
R
Max
= resistance range 2 = LOW (U
Low
<1V)
U
Low to High typ.
= 3V
R
Max
= resistance range 1 = HIGH (U
High
> 4V)
or open
Sender: open collector against DGND
DI
Trigger input
3
triggers A->B = LOW (U
Low
< 1V)
triggers B->A = HIGH (U
High
>4V) or open
DO
Overtemperature/Overvoltage
OT or OVP = HIGH (U
High
> 4V)
Quasi open collector with pull-up a15V
no OT or OVP = LOW (U
Low
< 1V)
At 15V at this output there will be max. +1.5mA
Short-circuit-proof against DGND
Receiver: U
Low
<1V, U
High
> 4V
²:
Note: positive currents flow out of the analogue interface and negative currents flow into.
AI = Analogue input
DI = Digital input
DO = Digital output
³ only for Level A/B operation, requires to be enabled in the setup menu
AO = Analogue output
4
see technical specs
1
requires a resistance set value at RSEL
14 Trigger In
15 OT / OVP
12 R-active
13 R-Range
11 VREF
Reference voltage
10V
7 Remote
8 Rem-SB
External control with current only
Like in the example above, but only current adjustable.
The power is set to maximum.
VREF
AGND
CSEL
10k
DGND
Figure 21
