© EPS Stromversorgung in 2022, this information is subject to change without notice
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30000800_manual_psb_10000_4u_30kw_en_04
3.6.4.5
Overview of the D-sub socket
3.6.4.6
Simplified diagram of the pins
++
Digital Input (DI)
It requires to use a switch with low resis-
tance (relay, switch, circuit breaker etc.) in
order to send a clean signal to the DGND.
V~0.5
AGND
Analog Input (AI)
High resistance input (impedance >40
kΩ) for an operation amplifier circuit.
4K
7
12V
+10V
Digital Output (DO)
A quasi open collector, realized as high re-
sistance pull-up against the internal supply.
In condition LOW it can’t drive any load, only
sink small current, as shown in the diagram
with a relay as example.
V~2
AGND
Analog Output (AO)
Output from an operation amplifier cir
-
cuit, low impedance. See specifications
table above.
3.6.4.7
Application examples
a) Switching the DC terminal 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 sufficiently low resistance. Check the specification of the controlling application.
Also see pin diagrams above.
In analog remote control, pin REM-SB is be used to switch the DC terminal of the device on and off. This
function is also available without analog remote control being active and can on the one hand block the
DC terminal from being switched on in manual or digital remote control and on the other hand the pin can
switch the DC terminal 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 terminal, according to the level
definitions in
3.6.4.3. 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 inter-
face” -> “REM-SB level” being set to “Normal”, it requests to switch the DC terminal on. So when activating
remote control, the DC terminal will instantly switch on.