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INTRODUCTION
A533-23-880 Issue C
1.11.2 Setpoints, warning and alarm conditions
Note: Sensors which generate alarm and warning messages are not safety sensors: refer to Section 1.11.3.
Each Module which monitors sensors has a microprocessor. Each monitored sensor (except for switch-type sensors,
such as the oil monitors, which have only two output states: error or no error) has four associated setpoints. The
setpoints are: the low warning setpoint, the high warning setpoint, the low alarm setpoint and the high alarm
setpoint. The microprocessor compares the sensor data to the setpoints to determine if an alarm or warning condition
exists:
If the sensor data is below the low warning setpoint or above the high warning setpoint, a warning condition
exists. A warning condition means that some aspect of the operation of the iF system is abnormal. The iF
system will continue to operate.
If the sensor data is below the low alarm setpoint or above the high alarm setpoint, an alarm condition
exists. An alarm condition means there is a serious fault which results in the shut-down of the iF system to
prevent damage to the iF system. However, note that for some of the alarm conditions, you may be able to
continue to operate the iF system if you have configured the iF system to 'run til crash': refer to Section 5.10.
If an alarm or warning condition exists, an appropriate alarm or warning message is displayed on the Pump Display
Terminal and an appropriate alarm or warning indication is sent to other Modules on the network. Refer to Tables 21
and 22 for a full list of the Pump Display Terminal warning and alarm messages.
You can use the default setpoints or you can use a Single Pumpset Monitor to adjust the setpoints to suit your
application: refer to Section 5.2. Refer to Section 2 for the default setpoints.
1.11.3 Safety sensors
The iF system has a number of safety sensors, which are connected to the relay interlock circuit. If any of the safety
sensors cause the interlock to operate, the iF system is immediately shut down (EMS - emergency shutdown).
Although the pump is shutdown, control and indication power supplies are maintained to safely establish the state
of the pump.
Table 1 lists the safety sensors and their shutdown conditions. Locations of the thermal safety sensors is shown in
Figure 5.
1.12 Pump Display Terminal
The Pump Display Terminal allows you to manually control the iF system and to display the status of the iF system.
Refer to Figure 7 which shows the front panel of the Pump Display Terminal.
Use the On button (1) to switch on the iF system (refer to Section 5.5). The On button has a green LED which is
illuminated when the iF system is on. Use the Off button (10) to switch off the iF system (refer to Section 5.9).
The display (2) shows two lines of text; each line is 16 characters long. In normal operation, the Normal display is
shown; the Normal display has two pages, and each page has two lines. Each page of the Normal display shows the
current status of one or more iF system sensors or internal clocks and counters.
As supplied the first page of Normal display shows FDP pump power consumption and FDP pump body temperature,
and the second page shows HMB pump power consumption and HMB pump-motor temperature. You can change the
information shown on the Normal display: refer to Section 5.3.
At any time, you can press one of the four menu buttons (7) to select a new menu. You can then use the up (5), down
(3), ENTER (6) and CANCEL (4) buttons to move through the menu. The appropriate menu selected LED (8) is on when
the corresponding menu is in use.
Use the menu (7), up (5), down (3), CANCEL (4) and ENTER (6) buttons as described below. Refer to Section 4 for a
full definition of the menu structures and the display formats.
The status LEDs (9) show the current status of the iF system and the Pump Display Terminal.
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