PUMP CONTROL UNIT - PCU The Pump Control Unit - PCU is an integrated electronic management system used for the pump of a firefighting vehicle with an integrated water tank level gauge. It can also be used to control other vehicle systems such as valves, lighting, warning lights, etc. The main features is Pressure Governor allows automated regulation of the engine RPMs according to the pressure fluctuations in the pump, which ensures a constant water flow at the nozzle regardless of thte number of connected users. The automatic pressure regulation is turned ON by turning the rotation switch - encoder. This will cause the pressure to increase to 4 bars. The pressure can subseguently be adjusted to the desired value using the encoder in 1 bar increments. The value on the LED display flashes until the pump pressure reaches the desired value. If the manual keys for manual control of the RPMs (pressure) are used while the automatic regulation is running, the automatic regulation will be turned off. When pressing the IDLE key, the control unit sets the engine RPMs to IDLE. PCU DIMENSIONS (back side) CONNECTION CABLE PCU-SIDE VIEW TANK LEVEL CABLE IN THE PROTECTION TUBE • RELAY OUTPUTS, ■ DIGITAL MOSFET OUTPUTS, ■ DIGITAL INPUTS FOR ALERTS AND USER-DEFINED SIGNALS, • REMOTE INDICATORS. ■LARGE LIGHT DRIVER, ■ PRESSURE GOVERNOR CCS SIGNALS, CAN... LOW PRESSURE SENSOR C. LENGTH [m] ADDITIONAL SENSOR CABLE LENGTH [m] TEMP SENSOR CABLE LENGTH RPM SENSOR CABLE LENGTH WATER LEVEL SENSOR CABLE LENGTH [m] MAIN CABLE LENGTH PRESSURE SENSOR DIMENSION INDUCTIVE PROXIMITY SENSOR DIMENSION

PUMP CONTROL UNIT-PCU WIRING DIAGRAM - GENERAL SENSOR 2 (HIGH PRESSURE, VACUUM,...) INDUCTIVE PROXIMITY SENSOR - PUMP RPM PRESSURE SENSOR - TANK LEVEL GAUGE-WATER TEMPERATURE SENSOR

PUMP CONTROL UNIT - PCU SPECIFICATIONS AND ORDERING INFORMATION SPECIFICATIONS Power supply Power consumption Relay output 1 Relay output 2 Digital outputs 1 Digital outputs 2 Buttons Pressure sensor range - low pressure Pressure sensor range - high pressure Pressure sensor range - vacuum Transducer electrical connection Transducer pressure port fitting Transducer housing Temperature sensor Automatic Pressure regulation range / accuracy Displays Wiring protection Enclosure protection (IEC 529) Operating temperature Dimension of the PCU PCU Connector Weight 21-30 Vdc max. 10 W 5 x, max. 1 A 1...