Eltek Valere Flatpack2, Быстрый старт

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Quick Start Guide Flatpack2 PS System, 4U, SP2-based
356825.103, 2v0 -2011-09
22
Standard Alarm Relays & Digital Inputs Connections
The alarm outputs in Flatpack2 systems use the
Fail-Safe Operation Mode (relay coils energized in
the system’s normal operation mode). When the
system is in alarm mode, the alarm relay coils are
de-energized.
The figure shows the position of the relay contacts
when the relay coils are de-energized (PS system
in alarm mode)
In order to implement monitored fail-safe digital
inputs circuits, the external relay coil must be
energized and the contacts closed in the system’s
normal mode of operation.
LVD Latching Contactors Connections
Flatpack2 systems’ LVBD and LVLD
3
functionality is implemented with magnetically latching
contactors
4
.
The coil of latching contactors is not energized in any state. They change state from open to close,
or vice versa, when a reversed pulse is applied to the coil.
3
LVBD, Low Voltage Battery Disconnect; LVLD, Low Voltage Load Disconnect
4
Smartpack2 -based Flatpack2 systems may be implemented with latching and with non-latching contactors
Appendix
Internal Connections
Standard Relays & Digital Inputs
Correct Use of Digital Inputs (example)
Normal Mode
External Relay Y
(Energized coil)
+
—
Digital Input X
(Normal mode)
Alarm Mode
External Relay Y
(De-energized coil)
+
—
Digital Input X
(Activated)
Flatpack2 PS System
Correct Use of Alarm Outputs (example)
Flatpack2 PS System
—
+
NC
NO
Com
Normal Mode
Relay X
(Energized coil)
+
—
Alarm Mode
Relay X
(De-energized coil) NC
NO
Com
Latching Contactor A
Latching Contactor B
Bidirectional
diode
Warning!
The bidirectional
diode must
always be
mounted to avoid
damaging the
controller.
Y
X
Two Types of Latching Contactors
Y
X
Latching Contactors
A latching contactor changes state only when a
reversed pulse voltage is applied to its coil
+ Pulse
ON
- Pulse
OFF