Instructor Experiment Guide Tabla

7

Fuel Cell Module FC50

Error code

Description

State: reason

Er 01

Hydrogen is missing

Starting: after three seconds of purging the cell, the voltage of the last cell of the stack is still below 0.6 V

Er 02

Starting: < 7.5 V Voltage of the fuel cell stack too Operation: <4V low • Excessive load

A.3

Response • See if hydrogen supply is empty, or improperly connected.

• Reduce load on the fuel cell system • Set fan power knob to "AUTO”

• Fan power set too low Er 03

> 45 °C Temperature of Starting: the fuel cell stack Operation: > 50 °C too high • Fan power set too low

• Ensure cooling fans are working • Set fan power higher or to "AUTO” • Ensure the ambient temperature is within range

Er 04

• Ensure no short-circuit is present Load current too Current > 10.5 A high • Reduce the load • In self-powered mode, activating the purge valve briefly increases the load

Er 05

Leaking in the system

Er 06

Er 07

Starting: Hydrogen flow > 60 ml/min with no current Operation: Hydrogen flow > 40 ml/min over expected value

• Return FC50 to the manufacturer for examination.

No voltage supply to FC50

In self-powered mode:

• Ensure stack power output is connected to the input of VC100

Communication with computer interrupted

Computer-assisted operation:

• Fuel cell stack power output not connected to VC100 input

EL200 problem

• Ensure RS232 cable attached

• RS232-cable not connected

• Start control software

• Control program not running

• Ensure your computer meets requirements

• Computer too slow to respond Er 08

If this error occurs several times, the system has a hydrogen leak.

Temperature in Electronic Load too high Voltage at the input of Electronic Load > 20 V

Er 10

Cooling fan control

Starting: Cooling fan power not set to "AUTO"

Er 11

In self-powered mode: No internal power in VC100 • Starting battery dead or improperly installed

• Turn off the EL200 • Ensure cooling fans at the rear of the EL200 are working • Set fan power knob to "AUTO” • Ensure cells are properly installed in the VC100. • Renew cells if necessary.

© Heliocentris – Energizing education

A.3

9

Fuel Cell Module FC50

8

Improper modes of operation The fuel cells must be sufficiently supplied with hydrogen at all times. Starving the stack of hydrogen while current is being drawn can lead to the destruction of the membranes or catalysts. Never connect the fuel cell to an external power source (e.g. laboratory power supply or solar module). A current flow forced from outside can immediately destroy the fuel cell.

10

Technical data Fuel cell stack Rated power output

40 W

Maximum power output

Approx. 50 W

Open circuit voltage

Approx. 9 V

Current at rated power

8A

Voltage at rated power

5V

Maximum Current

10 A Approx. 580 NmL/min

Hydrogen consumption during rated output Hydrogen nominal pressure

0.6 ± 0.1 bar gauge

Max. permissible hydrogen pressure

0.4…0.8 bar gauge Operation: 50 °C Starting: 45 °C

Max. permissible cell temperature

Module FC50 Supply voltage

12V DC

Power consumption

no-load operation: 5.2 W at 10A load current: 6.4 W

Hydrogen connection

Swagelok® quick-coupler type QM2-S

Ambient operating temperature Dimensions

+5 …+35 °C 400 x 297 x 200 mm (WxHxD)

Weight

3.5 kg

Noise emissions

< 70 dB(A)

Transport and storage conditions

Protect against reactive chemicals and frost

© Heliocentris – Energizing education