© EA Elektro-Automatik in 2022, this information is subject to change without notice
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06230920_manual_ps_10000_3u_15kw_en_01
3.5.4.5 Overview of the Sub-D Socket
3.5.4.6
Simplified diagram of the pins
++
Digital Input (DI)
The DI is internally pulled up and thus it re-
quires to use a contact with low resistance
(relay, switch, contactor etc.) in order to
clearly pull the signal down to DGND.
V~0.5
AGND
Analog Input (AI)
High resistance input (impedance >40
k....100 kΩ) for an operational amplifier
circuit.
4K
7
12V
+10V
Digital Output (DO)
A quasi open collector, realized as high resis-
tance pull-up against the internal supply. The
design doesn’t allow the pin to be loaded, but
to switch signals by sinking current.
V~2
AGND
Analog Output (AO)
Output from an operational amplifier cir
-
cuit, low impedance. See specifications
table above.
3.5.4.7 Application examples
a) Switching the DC output with pin REM-SB
A digital output, e.g. from a PLC, may be unable to cleanly pull down the pin as it may not
be of low enough resistance. Check the specification of the controlling application. Also see
pin diagrams above.
In remote control, pin REM-SB is used to switch the DC output of the device on and off. This function is
also available without remote control being active and can on the one hand block the DC output from being
switched on in manual or digital remote control and on the other hand the pin can switch the DC output on
or off, but not standalone. See below at “Remote control has not been activated”.
REM-SB cannot serve as a safety stop switch to securely deactivate the DC output in case
of emergency! For that an external emergency stop system is required.
It’s recommended that a low resistance contact such as a switch, relay or transistor is used to switch the
pin to ground (DGND).
Following situations can occur:
• Remote control has been activated
During remote control via analog interface, only pin REM-SB determines the states of the DC output, according to the levels
definitions in
3.5.4.3. The logical function and the default levels can be inverted by a parameter in the setup menu of the
device. See
If the pin is unconnected or the connected contact is open, the pin will be HIGH. With setting “Analog interface
-> REM-SB level” being set to “Normal”, it requests to switch the DC output on. So when activating remote
control, the DC output will instantly switch on.
