Table of Contents
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Operating and Maintenance Instructions
Figure 1 - Schematic of RS485 installation.............................................................................................................. 7
Figure 2 - Typical wiring for Monitor Operating mode ............................................................................................. 8
Figure 3 - Fan status screen showing that the controller had a previously stored fan array .................................... 8
Figure 4 - Keypad buttons ....................................................................................................................................... 9
Figure 5 - Main menu display screen on first application of power .......................................................................... 9
Figure 6 - Fan status screen .................................................................................................................................. 11
Figure 7 - Power meter and Summary Screen ..................................................................................................... 11
Figure 8 - Wiring diagram for Monitor operating mode - with optional pressure sensor ....................................... 13
signal and 10V supply from fans ........................................................................................................................... 15
signal and external power supply .......................................................................................................................... 15
signal ..................................................................................................................................................................... 15
Figure 12 - Wiring diagram for Monitor & Control operating mode - Modbus RS485 control signal ...................... 16
Figure 13 - Wiring diagram for Monitor & Control operating mode - keypad control ............................................. 16
Figure 14 - Wiring diagram for Monitor & Control operating mode - single sensor monitoring ............................. 17
input ....................................................................................................................................................................... 18
Figure 16 - Sensor airline connections for pressure and volume .......................................................................... 19
Figure 17 - Airline length for a single sensor constant volume system or volume monitoring system .................. 19
Figure 18 - Sensor-Fan wiring diagram with power supply ................................................................................... 22
Figure 19 - Simplified sensor-fan wiring using ebm-papst differential pressure sensors ...................................... 22
Figure 20 - Example of sensor airline connections in a 4-fan 2-sensors constant volume system ....................... 23
Figure 21 - Example of airline connections in a 4-fan 2-sensor constant pressure system .................................. 23
Figure 22 - Fan status screen showing individual sensor readings in m3/h .......................................................... 25
Figure 27 - Sensor Fail Alarm Indication .............................................................................................................. 27
Figure 28 - Exploded View of Product .................................................................................................................. 28
Table 1 - Information shown on the MDC ................................................................................................................ 6
Table 2 - Specification ............................................................................................................................................. 7
Table 3 - Supported Fan Modbus Port Configuration ........................................................................................... 10
Table 4 - PCB Bottom Side Connector Identities and Pin Functions .................................................................... 30
Table 5 - PCB Top Side Connector and Pin Function .......................................................................................... 30
Table 6 - Modbus Input Registers ......................................................................................................................... 32
Table 7 - Controller's Dedicated Modbus Holding Registers Part 1 ...................................................................... 33
Table 8 - Controller's Dedicated Modbus Holding Registers Part 2 ...................................................................... 37
Table 9 - Fan Alarm and Fan Warning Register Breakdown ................................................................................ 38
Table 10 - Full Modbus Relay Register Map (retrieved from fan registers) .......................................................... 40
210-OMI14229-Iss8.1
© ebm-papst UK Ltd 2021
Table of Figures
Figure 24 - Fan Alarm .............................................................................. 26
Figure 26 - Example of a second warning on a fan ................ 26
Table of Tables
CN1116 Full OMI
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