Table of Contents
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Installation & Application Guide
Product Description
The Delta Field Modules are small expansion I/O boards
that provide remotely expandable I/O to Delta's BACnet
Controllers. The DFM-400P Pulse Input Field Module
provides four pulsed inputs and communicates directly on
a BACnet RS-485 MS/TP network where it functions as an
independent BACnet device and the pulse counter values
and PI objects are accessible over the MS/TP network.
Ideal for electrical, water, gas, and various flow meters,
the DFM-400P has four pulse inputs. Two inputs support
pulses from 0 to 200 Hz and the other two inputs support
pulses from 0 to 2000 Hz.
Any additional strategies associated with the pulse
counter values are typically programmed in GCL in other
controllers on the network.
Contents
Model Numbers.......................................................................................................................... 2
Package Contents ...................................................................................................................... 2
Other Relevant Documents ........................................................................................................ 2
Important Information ............................................................................................................... 2
Product Specifications ............................................................................................................... 3
Board Layout (DFM-400P) .......................................................................................................... 4
Device Address DIP Switches .................................................................................................... 5
Indicators ................................................................................................................................... 5
Jumpers ..................................................................................................................................... 5
Mounting .................................................................................................................................... 7
Input Wiring ................................................................................................................................ 7
Power ......................................................................................................................................... 7
Network & Cabling Requirements ............................................................................................. 7
Network Topology ...................................................................................................................... 8
Network Communications Setup ............................................................................................... 8
Application Notes ....................................................................................................................... 9
Cautions and Warnings ............................................................................................................ 13
Compliance Declarations ......................................................................................................... 13
Delta Field Module (4 Pulse Inputs)
DFM-400P (Rev 1.2)
Document Edition 1.6
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Related Manuals for Delta DFM-400P
Summary of Contents for Delta DFM-400P
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Page 1: Table Of Contents
PI objects are accessible over the MS/TP network. Ideal for electrical, water, gas, and various flow meters, the DFM-400P has four pulse inputs. Two inputs support pulses from 0 to 200 Hz and the other two inputs support pulses from 0 to 2000 Hz. -
Page 2: Model Numbers
Pulse Input Field Modules may only be installed on a BACnet RS-485 MS/TP network. However, since the PI object is proprietary to Delta Controls, third party vendors may not be able to access these objects. To better accommodate multi-vendor integration the pulse count values and other properties are mapped Application Notes into internal AV objects. -
Page 3: Product Specifications
DFM-400P Rev 2.1 Installation and Appplication Guide Edition 1.6 Product Specifications Power Requirements 24 VAC • 2 VA • Class II • Ambient Ratings 32º to 131º F (0º to 55º C) • 10 to 90% RH (non-condensing) • Communication Ports NET1 –... -
Page 4: Board Layout (Dfm-400P)
DFM-400P Rev 2.1 Installation and Appplication Guide Edition 1.6 Board Layout Page 4 of 14... -
Page 5: Device Address Dip Switches
DFM-400P Rev 2.1 Installation and Appplication Guide Edition 1.6 Device Address DIP Switches Each individual DIP switch represents a unique value, which forms the device address when added together. Indicators Function Description Power Power Indicator This amber (or red on early boards) LED turns on to indicate that the controller has power applied. - Page 6 DFM-400P Rev 2.1 Installation and Appplication Guide Edition 1.6 DEVICE TYPE (No Jumper) Note that the Pulse Input Field Module does not have a Device Type jumper. It is fixed as a Subnet level device when connected to a BACnet MS/TP network. As a result, the Pulse Input Field Module may...
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Page 7: Mounting
DFM-400P Rev 2.1 Installation and Appplication Guide Edition 1.6 Mounting The DFM-400P includes a plastic enclosure that can be mounted quickly and easily with two screws in an appropriate location, or within another enclosure (to meet code requirements). The Rev 1.2 DFM-400P enclosure can be snapped into a 35mm DIN rail. -
Page 8: Network Topology
Typically this assumes that there is one other device configured as a System level device on the network. 2. Pulse Input Field Modules Configured as LINKnet Devices Not applicable for the DFM-400P Field Module, as it can only be connected to a BACnet RS-485 MS/TP network. Network Communications Setup On an MS/TP network the Pulse Input Field Module communicates at a default speed of 76,800 bps, but V3.22 OCRAview... -
Page 9: Application Notes
DFM-400P Rev 2.1 Installation and Appplication Guide Edition 1.6 Application Notes Objects The following is a list of predefined or “fixed” objects that reside in the Pulse Input Field Module, which you cannot create or delete. When connected to a BACnet RS-485 MS/TP network, these objects are readily accessible over the network. - Page 10 This means that time is only kept while the module is running, but is very accurate. Time is lost whenever power is cycled on the device, and will be initialized to ‘Delta default time’. Time will of course be updated over the network from a device that is configured as a Time Master.
- Page 11 DFM-400P Rev 2.1 Installation and Appplication Guide Edition 1.6 Counting Pulses The Pulse Input Field Module has two sets of counting registers. Pulse Inputs Counter Type Max. Pulses per Sample Time Max Pulse Rate PP1 and PP2 16 bits 65535...
- Page 12 Delta BACnet controllers based on the accumulated pulse values. MS/TP Connection Objects All of the existing predefined DFM-400P objects are readily accessible over the MS/TP network. GCL Programming Write GCL programs in other controllers on the network to use the pulsed input values to accomplish the desired control strategies, but ensure network traffic is kept to a minimum.
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Page 13: Cautions And Warnings
DFM-400P Rev 2.1 Installation and Appplication Guide Edition 1.6 Cautions and Warnings The DFM-400P Field Module is an Electro-statically sensitive device. Proper ESD protection (ground strap) should be used when installing this product so that damage to the WARNING product does not occur. - Page 14 DFM-400P Rev 2.1 Installation and Appplication Guide Edition 1.6 CE - DECLARATION OF CONFORMITY according to ISO/IEC Guide 22 and EN 45014 Manufacturer's Name: Delta Controls Manufacturer's Address: 17850 56 Avenue Surrey, British Columbia Canada V3S 1C7 declares that the product (s):...