A533-23-880 Issue C
Page 44
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INSTALLATION
3.13
Install additional safety equipment
If the sensors or microprocessor fail, the total flow rate of nitrogen displayed or output by the iF system may be
incorrect. If you need to know the total flow rate of nitrogen to the FDP pump for safety reasons, you should therefore
fit suitable measurement equipment in the nitrogen supply pipeline. If you fit a rotameter, ensure that it is suitable
for use with nitrogen and that it is correctly calibrated.
If the nitrogen supply to the iF system fails, a warning message will be shown on the Pump Display Terminal and will
be sent to the Interface Module(s) connected to the iF system. Ensure that your installation is configured so that it
remains safe if there is a failure of the nitrogen supply to the iF system.
If an alarm condition is detected (and the iF system is not configured to 'run til crash': refer to Section 5.10) the iF
system will shut down automatically. You must ensure that your installation remains safe if the iF system shuts down
automatically.
3.14
Connect to your emergency stop circuit (optional)
Note:
If you do not connect to your own control equipment, you must fit the iF Tool Interface Module plug
supplied to the iF Tool Interface Module connector on the rear of the iF system (Figure 4, item 8). If you do
not, you will not be able to operate the iF system.
If required, you can connect your own control equipment to the iF system to shut down the iF system in an
emergency. Use the following procedure.
1. Remove the link between pins 1 and 2 of the iF Tool Interface Module connector plug supplied.
2. Connect a suitable cable to the plug; Table 13 shows the use of the pins in the plug.
3. Refer to Figure 4. Fit the plug to the iF Tool Interface Module connector (8) on the rear of the iF system.
3.15
Electrical supply and RF earth (ground) connections
3.15.1
Reconfigure the iF system for your electrical supply (if necessary)
CAUTION
The iF system is supplied as either a high volts or a low volts system. A high volts system cannot be reconfigured
as a low volts system and vice versa.
If you have a low volts system use the following procedure to ensure that the correct transformer primary tapping is
selected before the electrical supply is connected to the iF system.
Refer to Figure 19 (a).
1. Undo screws (5) that connect the cover (4) to the Electrics box (2) and remove the cover.
2. Ensure that the common cable (6) is correctly connected to the common terminal on the terminal block (8).
WARNING
If your process Tool/control system needs to know the total flow rate of nitrogen to the iF system
for safety reasons, install suitable measurement equipment in the nitrogen supply pipeline.
WARNING
Nitrogen Purges are used to cool the FDP pump. Ensure that the system shuts down if the nitrogen
supply to the iF system fails.
