HRW Limited
Unit E, 11/F, Sun Ying Industrial Centre
Ph +852 2546 7402
9 Tin Wan Close, Tin Wan
Fax +852 2546 7403
Hong Kong
www.hrw.hk
HPD0460MR Multi-Function Room Units, Modbus RTU 485
FW4.02
The HPD0460MR devices may be used as Modbus 485 networked HVAC devices or standalone; as an
HMI for control and display of multiple controllers via the field panel, as a controller with high flexibility
for user configuration to suit a wide variety of control applications or as a network manager including
multi-zone annual time scheduling.
The display may be programmed to indicate user specific text, data points and settable parameters
such as set-points, fan-speeds and manual overrides. The user push-buttons, indication LED’s and an
audible sounder may be independently programmed to suit the user application. Unused physical I/O
points may be used in the system independently of the control loops.
The time clock version features a 365 day clock/calendar with four channel time-switch, 20 holidays
(one-off or annually recurring) and summer/winter time.
Depending on the version, predefined logic function blocks enable easy configuration of a variety of
functions including Economy Changeover (temperature or enthalpy), VAV Volume, Hours Run
monitoring, Minutes Run monitoring, Lead/Lag changeover, instantaneous Power calculation (kW, BTU)
and a wide array of hysteresis & dead-band/live-band choices (Compare function).
Common Features
32 line user programmable dot matrix LCD display with pop-up alarm text feature
1 Room temperature sensor on-board
1 Input programmable as DI or 10k NTC
2 Universal inputs (DI, 10k NTC, 100k NTC, 0-10Vdc or 4…20mA)
6 Digital outputs (ON/OFF, single or multi stage, 3-point floating, PWM)
4 User programmable operator buttons
4 User programmable indication LED’s
1 User programmable audible alert beeper
8 Virtual Digital Inputs (VDI)
8 Virtual Universal Inputs (VUI)
Typical Applications
Temperature, humidity, pressure, IAQ, universal
On/off, 3-point modulating, PWM (Pulse Width Modulation), step control, DX
Residential, Commercial, Hotels
Local User Interface, network interface, networked or standalone controller
Time-clock & calendar / time-switch, networked or standalone
Versions
HPD0460MR
Network HMI, 10 Point, 24Vac
HPD0460MRC
Network HMI / Universal Controller, 10 Point, 24Vac
HPD0460MRCT
Network HMI / Universal Ctrl / Scheduler, 10 Point, 24Vac
HPD0460MRT
Network HMI / Scheduler, 10 Point, 24Vac
