Operator control at the device
3.10 Activating and deactivating buffer operation
Power supply system SITOP PSU8600
100 Manual, 09.2018, A5E36758446-5-76
Activating and deactivating buffer operation
Using control contact "ON" (terminal "X1" and "X2"), at the SITOP BUF8600 buffer module
with double-layer capacitors - or at the SITOP UPS8600 UPS module, buffer mode can be
activated, deactivated or exited when the power fails. Preventing or exiting buffer mode is
especially interesting for non-operational periods, to prevent buffer components from being
unnecessarily discharged. This then facilitates the fastest possible buffer readiness after
switching on again.
Buffer mode is only possible if terminals "X1" and "X2" are connected. When delivered, this
is implemented using a wire jumper. As a consequence, buffer mode can be enabled,
prevented or exited using a floating contact (e.g. a contact in the plant or system). Instead of
the wire jumper, the contact is closed, and this must have < 10 Ohm in the closed state. The
energy storage device is charged irrespective of whether contacts "X1" and "X2" are
connected - or not.
● Close the connection between terminals "X1" and "X2".
When the power fails, the power supply system is automatically buffered using the buffer
components.
Deactivating or exiting buffer mode
● Open the connection between terminals "X1" and "X2".
When the power fails, the power supply system is not buffered using the buffer
components.
Buffer mode is immediately exited if the connection between terminals "X1" and "X2" is
opened during buffering.
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