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Commander UCP 5000 / 5100 Series
Note that connectors
J1
and
J2
are wired in parallel. That is,
J1
pin 1 is always common to
J2
pin 1, and the same for
each of the three pins.
Connectors
J4
and
J5
are wired independently, but operate in parallel. They will change state at the same time, but
J4
pin
1 is never common with
J5
pin 1. The same goes for pin 3. There is no
Disable
signal on J4 and J5. Pin 2 is not used. On
these connectors, the loss of the
Enable
signal is the same for an unpowered UCP, the UCP in Off mode, or the UCP in
EPO mode.
3.2.1 Power On/Off Modes
In Power On/Off mode, the
PDU Outlet Power
On
and
Off
buttons are used to switch on and off the PDU’s remotely
switchable outlets. Some PDUs may have outlets which are not controlled by these
On
/
Off
controls. (There are some
variations in behavior depending the PDU type which are explored in the section
“3.3 Control Modes and PDU Behaviors”
3.2.1.1 Enable Signal
For all models, the
On
and
Off
buttons control the state of the Commander’s
Enable
signal.
When the
On
button is pressed, the UCP’s
Enable
signal is asserted. At
Outlet Control Bus
connectors
J1
and
J2
, pin 1
is connected to pin 3. Additionally, at
Outlet Control Bus
connectors
J4
and
J5
, pin 1 is connected to pin 3.
When the
Off
button is pressed, the
Enable
signal is not asserted.
The
On
/
Off
buttons have no affect on the
Disable
signal.
3.2.1.2 Disable Signal
For –000 NO models, during both On mode and Off mode, the
Disable
signal is normally open. There is
no
connection
with
Return
(pins 2 and 3) — this is where the model version gets its normally open description.
For –001 NC models, during both On mode and Off mode, the
Disable
signal is normally closed. There
is
a maintained
connection with
Return
(pins 2 and 3) — this is where the model version gets its normally closed description.
3.2.2 EPO Mode
When the EPO button (large red one on right side which is not labeled), or a remotely connected EPO button connected to
the UCP panel, is pressed, the system enters Emergency Power Off (EPO) mode. If the UCP was previously in the On mode,
this would be canceled, which results in all switchable outlets in connected PDUs to be switched off. (There are some
variations in behavior depending the PDU type which are explored in the section
“3.3 Control Modes and PDU Behaviors”
3.2.2.1 Enable Signal
When in EPO mode, the UCP’s
Enable
signals on J1, J2, J4, and J5 are disengaged (revoking any previous On mode).
3.2.2.2 Disable Signal
For –000 NO models, during EPO mode, the
Disable
signal is asserted. On
Outlet Control Bus
connectors
J1
and
J2
,
pin 2 will be connected to pin 3.
For –001 NC models, during EPO mode, the
Disable
signal is
not
asserted. On
Outlet Control Bus
connectors
J1
and
J2
, pin 2 will
not
be connected to pin 3. In the NC models, the
lack
of this signal indicates the EPO is active.
At the press of one of the connected EPO buttons, the audio alarm will optionally be triggered on the UCP depending on
position of the
Audio
switch.
Audio Off
will keep the audio alarm silent.
