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Power Distribution Unit
PDU-8S
Installation / Operations Manual
Table of Contents
Applicable Models ........................................................ 2
Introduction ................................................................... 2
General Warnings .......................................................... 3
Unpacking &Pre-Installation Check ............................. 3
Installation & Mounting ............................................... 4
Wiring and Setup Instructions ....................................... 4
Output Fuse Combinations ............................................ 6
Timed Modes Of Operation ........................................ 12
Maintenance ................................................................ 13
Parts List ..................................................................... 13
Troubleshooting........................................................... 14
Product Specifications ................................................ 15
Warranty ...................................................................... 16
Part NO: 212-0024-8S
1
September 24th, 2020
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Summary of Contents for D&R ELECTRONICS PDU-8S
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Page 1: Table Of Contents
Power Distribution Unit PDU-8S Installation / Operations Manual Table of Contents Applicable Models ............2 Introduction ..............2 General Warnings ............3 Unpacking &Pre-Installation Check ......3 Installation & Mounting ..........4 Wiring and Setup Instructions ........4 Output Fuse Combinations ..........6 Timed Modes Of Operation ........ -
Page 2: Applicable Models
The PDU-8S is directly connected to the vehicle battery and ground, thus providing a di- rect easily traceable route to the input power source avoiding interfering with the vehicles factory wiring harness. -
Page 3: General Warnings
General Warning 1. The use of emergency warning devices does not ensure the safety of the operator. The operator is responsible to ensure safe operation of the vehicle regardless of whether the warning device is in operation or not 2. The effectiveness of this or any warning device is highly dependent on proper installa- tion and maintenance. -
Page 4: Installation & Mounting
Mounting the PDU unit The PDU-8S may be mounted anywhere inside the vehicle away from heat, moisture or the ele- ments. NOTE the PDU is not watertight do not mount it in the engine compartment, on the ex- terior of the vehicle or an area where moisture/dirt/ other contaminants can fall into the ex- posed areas of the PDU. - Page 5 Figure 1 Left side view of the PDU-8S showing the location of the high power Input and Output connectors. The wiring to the PDU will be determined by the installers design of the power distribution and wire routing for the installed equipment.
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Page 6: Output Fuse Combinations
PDU-8S outputs showing some possible fuse combinations Output Fuse Combinations IGNITION 12V BATTERY TIMER Figure 2 Typical fuse and output combination showing maximum fuse ratings for 10A continuous loads, the chart is read vertically the six possible combinations shown add to a total draw of 60A (the maximum PDU Input rating) . - Page 7 1. Run a 6 AWG wire lead from the Battery via a fusible link or circuit breaker rated at 80A to the PDU-8S. 2. Cut the wire to length and strip 1/2” length of insulation from the end of the wire, insert the bare wire into a suitable ring terminal (these are not provided the ring hole must clear a 1/4”...
- Page 8 SPECIAL NOTES: 1. Making a good solid ground connection to the chassis requires the removal of the paint right down to the shiny bare metal at the point of securing the ground wire to the chassis. 2. All ground returns for equipment connected to the PDU should terminate at the PDU using the GROUND terminal block.
- Page 9 Connecting the ground outputs (GND) from the PDU These outputs for ground connection is the return path for the device/equipment connected to the two +12V OUT from the PDU. 1. Run the ground wire from device (i.e. light and siren controller) to the PDU mounting loca- tion.
- Page 10 Connecting the power output from the PDU Determine the type of power required by the connecting equipment (i.e. ignition controlled, constant/battery or timed) and start connecting the vehicle equipment according to the system design requirements. 1. All power connections will terminate at the PDU, bring the POWER and GROUND (return) wires for the equipment to be connected directly to the PDU.
- Page 11 To set the time delay follow these steps: 1. Locate the dip switch on the PDU. 2. Refer to the attached label or Table 1 to determine the switch settings. 3. Use a pen tip or other suitably small tool to set the switches. This will select the time increments to the output off time delay TIME SW-1...
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Page 12: Timed Modes Of Operation
Timed Modes of Operation Battery Voltage: A) Between 14.0 to 18V the output of the “PDU Timer” will be ON unconditionally. B) If the battery voltage drops below 14.0V and the ignition is OFF, the “PDU Timer” will commence a predetermined countdown delay at the end of which the unit will shut-off and go into “STANDBY”... -
Page 13: Maintenance
Maintenance The PDU-8S does not require user maintenance except for the individual fuse replacement. Part NO: 212-0024-8S September 24th,... -
Page 14: Troubleshooting
Troubleshooting PROBLEM POSSIBLE CAUSE SOLUTION No power at any of the out- No power to “12V INPUT” Check 12V INPUT connection for puts loose or missing wires. Check Battery fusible link or circuit No relay “click” breaker, if this is faulty replace it if it is tripped reset it. -
Page 15: Product Specifications
Specifications General Description No. of Available Connections Power Inputs: 6 AWG +12V @ 60A max input current 6 AWG Ground 18 AWG Ignition Control Input Power Output (High Current Connection) 8 AWG @ 50A Max +12V (fused at 75A) 8 AWG Ground Battery Voltage Monitor 18 AWG sense wire @ +12V BATT terminal 18 AWG sense wire @ GND BATT terminal... -
Page 16: Warranty
WARRANTY D & R Electronics warrants its new products to be free from defects in material and workmanship, un- der normal use and service for a period of one year on parts replacement. This warranty applies only to original purchasers acquiring the product directly from D&R Electronics, or its authorized dealers.
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