DFM-400P
Description: The DFM-400P Pulse Input Field Module provides specialized I/O to Delta’s BACnet™ controllers in the form of four pulsed inputs. It communicates directly on a RS-485 BACnet MS/TP network, where it functions as an independent BACnet device. The pulse input points are accessible to other BACnet devices over the BACnet MS/TP network.
Features:
- Native BACnet device
- Pulse totals are backed-up in EEPROM during power outage
- Key pulse count values are mapped to standard BACnet variables for multi-vendor integration
- BACnet MS/TP network communication
- Easy-to-mount housing
- Derived Network Addressing (DNA) for simple integration into a standard network architecture
- Incorporates Delta’s MS/TP autobaud feature which removes the need to manually set up the device’s baud rate
Application: The DFM-400P is ideal for monitoring electrical, water, gas, and various flow meters or use in a diverse range of other applications that require pulse input monitoring. It is capable of handling pulses from 0 to 200 Hz on all four pulse inputs and 0 to 2000 Hz on two pulse inputs.
Additional strategies associated with the pulse counter values can be programmed through GCL+ in other controllers on the network.
Accessories:
- RPT-768—Delta Network Repeater for BACnet MS/TP
- TRM-768—Delta Network Terminator for BACnet MS/TP
-
Ordering: Order the Pulse Input Field Module according to the following product number:
DFM-400P
Inputs
2 Pulse inputs (PI1 and PI2) @ 0 - 2000 Hz each
2 Pulse inputs (PI3 and PI4) @ 0 - 200 Hz each
Monitors either dry contact or open collector signals
Jumper selectable DEBOUNCE circuitry for mechanical contacts (for pulses less than 200 Hz)
Technology
8-bit Processor with internal A/D, Flash and RAM
Software clock
LED status indication of the CPU
Device Address
Set via DIP switch or software setup
DIP switch address range: 1 to 99 per BACnet MS/TP network segment
Software switch address range: as per the BACnet standard
Supports Delta’s derived network addressing (DNA) scheme
Communications Ports
NET1 – RS-485 LAN, BACnet MS/TP @ 9600, 19200, 38400 or 76800 bps (default) (maximum of 99 devices per BACnet MS/TP segment)
Connectors
Removable screw-type terminal connectors
Wiring Class
Class 2
Power
24 VAC
4 VA
Ambient
32º to 131ºF (0º to 55ºC)
10 - 90% RH (non-condensing)
Dimensions
6.5 x 4 x 1.8 in. (16.8 x 10 x 4.7 cm) with housing
0.4 lb. (184 g) with housing
Compliance
CE
FCC
Listings
UL 916 Listed
C-UL Listed
BTL Listed