ITL does not ship power supplies with our FDMs, so you will need to choose a power supply to suit. The power supply you choose is important in maintaining the reliability and performance of the pump interfaces. We recommend you don't skimp on this aspect of your system.
If you want to buy a single standard power supply to run most FDMs, then:
One 15V DC, 1A, regulated power supply per FDM
will cover all except FDM115 (used in Asia-Pacific) and FDM170 (used in Europe).
| FDM | Power Supply | |
|---|---|---|
| Part Number | Name | |
| FDM071 | Wayne/Gilbarco Current Loop | 15V DC, 1A, regulated |
| FDM082 | Passive Forecourt Distribution | None required |
| FDM093 | Tatsuno Partyline | 9-15V DC, 1A, regulated |
| FDM104 | Tokheim | 9-15V DC, 1A, regulated |
| FDM115 | NZ Protocol | 12V AC, 500mA |
| FDM126 | 9-15V DC, 1A, regulated | |
| FDM137AS | Current Loop Active (Censtar) | 15V DC, 1A, regulated |
| FDM137HS | Current Loop Active (HengShan) | 15V DC, 1A, regulated |
| FDM148PB | Current Loop Passive | 9-15V DC, 1A, regulated |
| FDM159AS | Bennett/M3000 | 15V DC, 1A, regulated |
| FDM170 | Nuovo Pignone 4-wire | 24V DC, 1A, regulated |
| FDM192 | Active RS485 | 9-15V DC, 1A, regulated |
| FDM203 | EPS | 9-16V DC, 1A, regulated |
| FDM225 | Logitron PumaLAN | 9-16V DC, 1A, regulated |
| FDM236 | HongYang 4-wire Current Loop | 15V DC, 1A, regulated |
Power Supply Examples
Below are some examples of appropriate power supplies you can use, with links to the products on the element14 website. There are many other options and places to buy such power supplies. You don't need these exact manufacturers or products, but a similar standard of supply is needed. See the checklist below for more details.
| Made By | Part # | Output Power | Example Link | Picture |
|---|---|---|---|---|
| XP Power | AED36US15 | 15V, 2.4A | element14 | 
|
| XP Power | AED45US15 | 15V, 3A | element14 | 
|
| XP Power | DNR18US15 | 15V, 1.2A | element14 | 
|
| Lambda | JWS50-15/A | 15V, 3.5A | element14 |  |
Power Supply Checklist
- The power supply should be a professionally assembled unit of good quality.
- The power supply must be regulated. This means that it contains an active circuit to provide a smooth output at the specified voltage. It must not suffer from dips under load, or from variations in the mains AC power. This is especially important if there is other industry or equipment in the area.
- Avoid plug packs - also known as "wall warts" - that are a transformer built into the plug. While these work, it is very easy for them to fall out or come partially loose resulting in unreliable or broken communications in the middle of operations. They are acceptable in lab/test environments.
- For safety, the power supply should be enclosed, and if it has a metal case it should be grounded.
- Do not power the FDM from the PC power supply. The FDM will not be isolated from the PC and power surge or nearby lightning strike will be more likely to damage the PC.
- Avoid power supplies with multiple voltage selections. While these will normally work, they can easily be accidentally set to the wrong voltage.
- Test the output of the power supply under load (running a fully-connected FDM). Make sure the minimum voltage does not go below the requirement, prior to selecting it. To simulate a fully connected FDM you can setup an FDM071 Intelligent Current Loop with all pump channels shorted - this will not damage the FDM.
- Power for all parts of The Enabler system should be from a separate mains power circuit, wired directly back to the switchboard. Do not plug your PC or FDM into a circuit that is shared with heavy equipment such as pumps - this equipment can produce large surges and dips in power that prevent the system working correctly or even produce permanent damage.