Programmable Functions

5.3.2 Signal Inputs & Programmable Functions

This section describes the signal inputs used in the Powerware 9355 UPS. The signal inputs are control inputs that can be used to trigger a programmable function. This section also discusses both how to use the signal inputs and what programmable functions are available.

5.3.2.1 Signal Inputs 1 & 2

The UPS incorporates two programmable inputs: X44 and X45. The connectors X44 and X45 can be found on the front of the UPS. Shorting the pins with a maximum resistance of 10 ohms activates the input signal.

The function programmed to the input is triggered after the input has been in the active state for at least 1ms (±0.2ms) continuously. The same timing applies for inactivation.

The inputs can also be programmed to use reverse logic. In that case, the input would be shorted by default, then opened to activate the programmable

function. The logic direction is selectable from the front panel display.

5.3.2.2 X-Slot Inputs 1 & 2

Pulling the X-SLOT serial port RX-signal to a voltage between +3V and +15V for more than 5 seconds activates the input signal. The time for activating the signal is user configurable and can be selected between 0 and 65 seconds from the front panel display. The same parameter can be found in the service menu.

The input signal related to X-SLOT 2 can also be activated from the service (D-sub) connector since the signals are multiplexed.

The programmed function goes inactive after the activating condition has been absent for 1 second.

5.3.3 Programmable Functions

The signal inputs can be used to trigger a programmable function.

By default, each signal input is linked to a building alarm, which is active while the corresponding input signal is active. The only exceptions are if the signal input is configured to the “empty” setting or to trigger another building alarm.

The corresponding building alarms are listed below.

• INPUT 1 Building Alarm 1

• INPUT 2 Building Alarm 2

• X-SLOT 1 Building Alarm 3

• X-SLOT 2 / SERVICE

Building Alarm 4

5.3.3.1 Disable Bypass

This command disables the usage of bypass. While the signal is active, the unit will not change to bypass, neither in normal operation nor as a response to the bypass command. While active, it prefers dropping the load to changing to bypass. This function is only overridden using the “Force Bypass” setting.

5.3.3.2 Shutdown

Causes the unit to shut down immediately when activated.

This function does not initiate the automatic restart itself, but if the automatic restart is already pending, it will not cancel it either.

This function is edge activated. Shutting the unit down using this function will not prevent starting it up again using the front panel display or XCP.

Note:

The LV unit bleeds the DC rails down and does a full shut down, whereas the HV unit goes to Standby Mode.

5.3.3.3 Remote On / Off

Activating the function causes the unit to shut down. Inactivation causes the unit to start up again.

If two or more input signals configured to this function are active, the start-up will be triggered when the last of the inputs inactivate.

Shutting the unit down using this function will not prevent starting it up again using the front panel display or XCP.

5.3.3.4 Delayed Shutdown

Activating this function causes the unit to shut down after a user-defined delay.

The default shutdown delay is 120 seconds. It can be changed on the front panel display.

After shutting down, the automatic restart is initialized which will start the unit up after a delay. The pending automatic restart has higher priority than starting the unit up by XCP or by other signal input function.

Both the pending shutdown and automatic restart can be cancelled by pressing the front panel display on/off button (TURN UPS OFF). While the automatic restart is pending, the front panel display can be used to turn the unit ON immediately.

5.3.3.5 Force Bypass

Forces the unit to bypass operation immediately when the signal activates. The transfer is unconditional and causes load loss if bypass operation is not

possible (bypass not available, etc.).

Note:

Force Bypass does not have any effect if the usage of bypass is disabled with the user parameter.

5.3.3.6 Request Bypass

The unit tries to transfer to bypass operation for two seconds each time when the function activates. This function is edge-triggered and only responds to the activation.

The unit will not transfer to bypass if bypass is disabled with an active “disable bypass” signal input function

The unit will not transfer to bypass if bypass is disabled with the user parameter.

5.3.3.7 Request Normal

This function clears an active bypass request. When the unit is in requested bypass operation, this function will cause the unit to return to normal operation.

This function is edge-triggered and only responds to the activation.

5.3.3.8 Normal / Bypass

The unit tries to transfer to bypass operation for two seconds each time this function is activated.

If bypass operation was achieved, the inactivation of this function causes the bypass request to be cleared and the unit to return to normal operation. If two or more input signals configured to this function are active, the normal

command is given when the last one is inactivated.

5.3.3.9 External Battery Breaker

This is the external battery breaker status. While this status is active, it causes the “Battery Breaker Open” alarm to be active. The alarm remains active while one or more signal inputs configured to this function are in the active state.

During the active state the batteries will not be charged (ABM: battery not connected).

When the function is inactivated, the ABM will start a new charging cycle. This function also causes the active “Battery Test Failed” notices to be cleared.

5.3.3.10 Charger Off

Turns off the charger and forces the ABM cycling to the resting status. The

“battery charging disabled” notice is active while the function is active.

It stays active while one or more signal inputs configured to this function are in active state. The ABM returns to normal operation when the function is

deactivated.

5.3.3.11 Building Alarms

Causes the selected building alarm to be active while the input signal is active.

The building alarm stays active while one or more signal inputs causing the same alarm are in the active state.

5.3.3.12 External Transformer Overtemperature

Starts the ”Transformer Overtemperature” alarm. If the signal is constantly active during the user settable delay, the UPS output is shut down.

5.3.3.13 On Generator

While active, the UPS detects that the input is fed from a generator.

5.3.3.14 Empty

This is an empty function that does not do anything. It does not cause the default building alarm to activate.