Automated Logic RC642 Owner's manual

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Room Controller
Technical Instructions
Rev. 7/13/2011

© 2011 Automated Logic Corporation. All rights reserved throughout the world. Automated Logic Corporation, the Automated Logic logo,
WebCTRL, EIKON, BACview, SuperVision, and InterOp are registered trademarks, and Alert is a trademark of Automated Logic Corporation.
BACnet®is a registered trademark of ASHRAE. All other brand and product names are trademarked by their respective companies.
Contents
What is the Room Controller?.....................................................................................................1
Driver and control program ........................................................................................... 1
Specifications .............................................................................................................. 2
Inputs .......................................................................................................................... 3
Digital outputs ............................................................................................................. 3
Analog outputs............................................................................................................. 3
Room sensors .............................................................................................................. 4
BACviews..................................................................................................................... 4
Display......................................................................................................................... 5
Buttons........................................................................................................................ 5
Creating a custom control program ............................................................................... 6
Using this document .................................................................................................................7
METHOD A: Installing a Room Controller in a WebCTRL system.....................................................8
To mount the Room Controller....................................................................................................8
Wiring for power........................................................................................................................8
To wire for power .......................................................................................................... 8
To address the Room Controller..................................................................................................9
Wiring for communications with a controller network ..................................................................10
Wiring specifications .................................................................................................. 10
To wire the Room Controller to the controller network .................................................. 10
Wiring an RS room sensor to the Room Controller ......................................................................11
Rnet wiring specifications........................................................................................... 11
To wire an RS room sensor to the Room Controller....................................................... 12
Wiring inputs and outputs........................................................................................................13
Wiring specifications .................................................................................................. 13
To wire inputs and outputs.......................................................................................... 13
To set display options for a networked RC642D Room Controller .................................................15
Downloading the Room Controller ............................................................................................16
To download in WebCTRL............................................................................................ 16
To assign inputs or outputs to points.........................................................................................17
Input values ............................................................................................................... 17
Output values............................................................................................................. 18
Resolution values....................................................................................................... 18
Offset/Polarity values................................................................................................. 19
To set up the driver..................................................................................................................20
Driver......................................................................................................................... 20
Device........................................................................................................................ 21
Notification Classes ................................................................................................... 21
Calendars .................................................................................................................. 22
Common and Specific Alarms ..................................................................................... 22
Custom Translation Tables.......................................................................................... 22
Switch and Jumper Positions ...................................................................................... 23
Display Options .......................................................................................................... 23
To communicate through the local access port...........................................................................23
To set up a Local Access connection in WebCTRL......................................................... 24

Troubleshooting a networked Room Controller...........................................................................25
Formatting the Room Controller .................................................................................. 25
LED's......................................................................................................................... 25
Serial number ............................................................................................................ 27
Replacing the battery in a networked Room Controller................................................. 27
To take the Room Controller out of service................................................................... 27
METHOD B: Installing a stand-alone Room Controller ................................................................28
To mount the Room Controller..................................................................................................28
Wiring for power......................................................................................................................28
To wire for power ........................................................................................................ 28
Wiring inputs and outputs........................................................................................................29
Wiring specifications .................................................................................................. 29
To wire inputs and outputs.......................................................................................... 30
Selecting or downloading a control program..............................................................................31
To select a built-in control program............................................................................. 31
To download a custom control program....................................................................... 35
To set up a stand-alone RC642D Room Controller......................................................................36
To set display options ................................................................................................. 36
To set the time and date ............................................................................................. 37
To change the time or date format............................................................................... 37
To set up schedules .................................................................................................... 37
Troubleshooting a stand-alone Room Controller.........................................................................38
LED's......................................................................................................................... 38
Serial number ............................................................................................................ 39
Replacing the battery in a stand-alone Room Controller .............................................. 39
Compliance............................................................................................................................40
FCC Compliance......................................................................................................... 40
CE Compliance........................................................................................................... 40
BACnet Compliance ................................................................................................... 40
Appendix A - Room Controller diagram......................................................................................41
Appendix B - Built-in control programs in a stand-alone Room Controller .....................................42
#1: 100% outside air unit .......................................................................................................43
Control schematics .................................................................................................... 43
Point list .................................................................................................................... 44
Sequence of operation ............................................................................................... 44
#2: Air source heat pump - reverse to heat................................................................................47
Control schematic ...................................................................................................... 47
Point list .................................................................................................................... 47
Sequence of operation ............................................................................................... 48
#3: Air source heat pump - reverse to cool ................................................................................51
Control schematic ...................................................................................................... 51
Point list .................................................................................................................... 51
Sequence of operation ............................................................................................... 52
#4: Air source heat pump - intermittent fan - reverse to heat.......................................................55
Control schematic ...................................................................................................... 55
Point list .................................................................................................................... 55
Sequence of operation ............................................................................................... 56
#5: Air source heat pump - intermittent fan - reverse to cool .......................................................58
Control schematic ...................................................................................................... 58
Point list .................................................................................................................... 58
Sequence of operation ............................................................................................... 59

#6: Convective/fin tube heater................................................................................................61
Control schematic ...................................................................................................... 61
Point list .................................................................................................................... 61
Sequence of operation ............................................................................................... 61
#7: Fan coil unit - 2-speed fan, modulated or 2-stage cooling and heating ..................................62
Control schematics .................................................................................................... 62
Point list .................................................................................................................... 63
Sequence of operation ............................................................................................... 63
#8: Fan coil unit - 3-speed fan, 2-stage or modulated cooling, 1-stage or modulated heating........66
Control schematics .................................................................................................... 66
Point list .................................................................................................................... 67
Sequence of operation ............................................................................................... 67
#9: Fan coil unit - 3-speed fan, 1-stage or modulated cooling, 2-stage or modulated heating........70
Control schematics .................................................................................................... 70
Point list .................................................................................................................... 71
Sequence of operation ............................................................................................... 71
#10: Fan coil unit - intermittent fan, modulated or 2-stage cooling and heating ...........................74
Control schematics .................................................................................................... 74
Point list .................................................................................................................... 75
Sequence of operation ............................................................................................... 75
#11: Fan coil unit - heat controlled fan, modulated or 2-stage cooling and heating ......................78
Control schematics .................................................................................................... 78
Point list .................................................................................................................... 79
Sequence of operation ............................................................................................... 79
#12: Unit ventilator - 2-speed fan ............................................................................................82
Control schematics .................................................................................................... 82
Point list .................................................................................................................... 83
Sequence of operation ............................................................................................... 83
Appendix C - Editing properties in a built-in control program .......................................................86
To use a BACview6 Handheld...................................................................................... 86
Editable properties..................................................................................................... 89

1
A Room Controller is a combination zone sensor and controller that is used for zone
control. The two models of Room Controller are:
•RC642 - No user interface
•RC642D - Has an LCD display and buttons that allow a user to:
○Adjust the setpoint
○Set the zone to occupied
○Display information such as zone temperature, outside air temperature, override
time, and setpoints
○Set schedules
○Adjust the Room Controller's time
A Room Controller can be installed on a WebCTRL network or as a stand-alone unit.
On a WebCTRL
network
Stand-alone
unit ***
Model: RC642 X
RC642D X X
Control program: Built-in * X
Custom ** X X
Set schedules: On Room Controller X
In WebCTRL X
* The display model contains 12 built-in control programs from which you can choose.
Use a built-in control program only in a stand-alone Room Controller. See
To select a
built-in control program
(page 31) for a description of the control programs.
** See Creating a custom control program (page 6).
*** Stand-alone Room Controllers can be integrated into a WebCTRL system at a later
time. If you expect to do this, ALC recommends that you initially set up each stand-
alone Room Controller with:
•a custom control program
•a unique address
Driver DRV_RCM
Maximum number of downloadable
control programs 1
Maximum number of BACnet objects* 300
*Depends on available memory.
What is the Room Controller?
Driver and control
program

2
Power 24 Vac ±10% (21.6—26.4 Vac), 50–60 Hz, 8.4 VA, 350 mA,
single Class 2 source only, 100 VA or less
or
26 Vdc (24 Vdc min, 30 Vdc max), 7.41 W, 285 mA
Local Access port For system start-up and troubleshooting
Rnet port The RC642D Room Controller supports up to 4 RS Standard
room sensors for averaging or high/low select control.
The RC642 supports up to 3 RS Standards and one RS Plus,
RS Pro, or RS Pro-F sensor.
Inputs 4 inputs configurable for thermistor or dry contact. Inputs 3
and 4 are also configurable for 0–5 Vdc.
Input resolution 10 bit A/D
Input pulse frequency 10 pulses per second. Minimum pulse width (on or off time)
required for each pulse is 50 msec.
Digital outputs 6 digital outputs, relay contacts rated at 1 A max @ 24 Vac.
Configured normally open.
Analog outputs 2 analog outputs, 0–10 Vdc (10 mA max)
Output resolution 8 bit D/A
Microprocessor High speed 16-bit microprocessor with ARCNET
communication co-processor
Memory 512 kB non-volatile battery-backed RAM, 1 MB Flash
memory, 16-bit memory bus
Real-time clock Battery-backed real-time clock keeps track of time in event
of power failure
Battery 7-year Lithium BR2330 battery provides a minimum of
10,000 hours of data retention during power outages
Protection Incoming power and network connections are protected by
non-replaceable internal solid-state polyswitches that reset
themselves when the condition that causes a fault returns to
normal. The power, network, input, and output connections
are also protected against voltage transient and surge
events.
BT485 connector You attach a BT485 (not included) to a controller at the
beginning and end of a network segment to add bias and to
terminate a network segment.
Status indicators LED's indicate status of operation, errors, and power
Environmental operating
range
32–122°F (0–50°C), 10–90% relative humidity, non-
condensing
Physical Plastic enclosure, removable screw-type terminal blocks
Overall dimensions Width:
Height:
6 3/4 in. (17.2 cm)
4 1/4 in. (10.8 cm)
Weight 10.6 oz. (0.3 kg)
Specifications

3
BACnet support Conforms to the Advanced Application Controller (B-AAC)
Standard Device Profile as defined in ANSI/ASHRAE
Standard 135-2004 (BACnet) Annex L
Listed by UL-916 (PAZX), cUL-916 (PAZX7), FCC Part 15-Subpart B-
Class A, CE EN50082-1997
The Room Controller has 4 inputs that accept the signal types described below.
These
inputs...
Support this
signal type...
Description
All inputs Thermistor Precon type 2 (10 kOhm at 77°F). Input voltages should
be from 0.489 Vdc to 3.825 Vdc for thermistors.
All inputs Dry contact A 5 Vdc wetting voltage detects contact position,
resulting in a 0.5 mA maximum sense current when the
contacts are closed.
Input 3
Input 4
0–5 Vdc The output impedance of a 0–5 Vdc source must not
exceed 10 kOhms. The input impedance of the Room
Controller is approximately 1 MOhm.
All inputs Pulse counter* Pulse counting up to 10 pulses per second.
Minimum pulse width (on or off time) required for each
pulse is 50 msec.
All inputs Timed local
override
A momentary contact switch that overrides a schedule
and turns equipment on for a defined period of time. The
override time added for each push of the button and the
maximum allowable On time are software adjustable.
*The Room Controller can perform pulse counting for dry contact or voltage inputs if you assign
the input to a Pulse to Analog Input microblock. See To assign inputs or outputs to points (page
17).
NOTE The Room Controller has a built-in room temperature sensor (Input 6) that is read
by an RS Zone Sensor microblock. You must use a BACview to calibrate the temperature
sensor in a stand-alone Room Controller. See:
Appendix C - Editing properties in a built-in control program (page 86)
Creating a custom control program (page 6)
The Room Controller has 6 digital outputs. These outputs are small pilot relays that drive
external 24 Vac relays/devices (or 26 Vdc, depending on the controller's power supply).
Each output is a wet contact rated at 1 A maximum and is normally open.
The Room Controller has 2 analog outputs that support voltage devices from 0-10 Vdc.
The controlled device must have a minimum of 1000 Ohms resistance measured from its
input to ground and must share the same ground as the controller.
Inputs
Digital outputs
Analog outputs

4
If the Room Controller is installed in a WebCTRL system, you can wire RS sensors to it.
To this model's
Rnet port...
You can wire these combinations of RS room sensors...
RC642
•1 RS Plus, RS Pro, or RS Pro-F
•1–3 RS Standards
•
1–3 RS Standards, and 1 RS Plus, RS Pro, or RS Pro-F
RC642D 1-4 RS Standards
NOTE The RC642's internal sensor counts as an RS Standard on the Rnet. The RC642D's
internal sensor counts as an RS Pro on the Rnet.
To start up and troubleshoot the Room Controller, you can temporarily connect the
following items to its Local Access port:
•The BACview6Handheld. See its Technical Instructions
(http://accounts.automatedlogic.com).
•A laptop running Virtual BACview, an application that simulates the BACview6. Virtual
BACview is included with WebCTRL v4 or later.
To use the above with...
Built-in control programs See Appendix C - Editing properties in built-in control
programs (page 86).
Custom control programs You must:
1. Create a BACview screen file in ViewBuilder.
2. Enter the screen file name in the Room Controller's
Properties
box in SiteBuilder.
3. Download the control program to the Room Controller.
NOTES
•Disconnect the BACview immediately after editing the properties. The BACview
connection heats up the Room Controller, affecting its temperature reading. The
recovery time depends on how long the BACview was connected.
•Room Controller does not support a BACview wired to its Rnet port.
Room sensors
BACviews

5
Model RC642D only
The display's default screen shows one of the following, depending on the Room
Controller's setup:
•The zone temperature (and alternately the outside air temperature, if programmed),
plus the current Occupied/Unoccupied schedule
•The current time
If using a built-in control program, the display also shows the items below. A custom
control program must contain specific programming to display these items. See Creating
a custom control program (page 6).
The display
shows...
When...
Heating
heating is occurring
Cooling
cooling is occurring
the fan is on. A number below the fan icon indicates fan speed.
You can press the Room Controller's buttons to view additional information. See Buttons
below.
Model RC642D only
Press ...
To...
or Raise or lower the setpoint. The maximum you can adjust the setpoint
is defined in the
Max Adjust
field in the microblock's properties.
MANUAL ON
Override the schedule and set the zone to occupied. Press
MANUAL
ON
once to override the schedule for the amount of time defined in the
Each pulse
field in the microblock's properties. Press the button again
to incrementally increase the time. For example, if the
Each pulse
field
is set at five minutes, press the button once for an occupancy of five
minutes, twice for ten minutes, and so on. The maximum length of time
you can override the schedule is defined in the
Maximum
Accumulation
field in the microblock's properties.
To cancel the override, hold down
MANUAL ON
until the display shows
the zone temperature and
Unoccupied
.
INFO
Cycle through:
•Zone temperature
•Outside air temperature
•Schedule override time
•Heating setpoint
•Cooling setpoint
SCHEDULE
View the times that any existing occupied and unoccupied schedules
begin.
TIME
Cycle through the current time, date, and year.
Display
Buttons

6
•Create a custom control program in EquipmentBuilder or EIKON LogicBuilder. If the
Room Controller will be on a WebCTRL network, you may select any zone application
in EquipmentBuilder. However, EquipmentBuilder has a separate category for stand-
alone applications.
•To use a built-in control program as a starting point for a custom control program, go
to the ALC website (http://accounts.automatedlogic.com). Select Support >
Download > WebCTRL and ExecB > Engineering and Startup Tools > Room
Controller Applications.
•The control program must:
○Include the RS Zone Sensor microblock.
○Be made as a ZN control program.
•An RC642D can display following items, if programmed:
To display...
When...
The control program must have...
Heating
Heating is occurring Network Binary Output microblock
Address
is: rcd://temp/heating
Cooling
Cooling is occurring Network Binary Output microblock
Address
is: rcd://temp/cooling
The fan is on.
A number below the
fan icon indicates fan
speed.
Network Analog Output microblock
Address
is: rcd://temp/fanspeed
If input wire is... The display shows...
0
1
2
3
4
Other than 0-4
No fan icon
Fan icon + 1
Fan icon + 2
Fan icon + 3
Fan icon + 4
Fan icon only
An alarm occurs Enable the optional
Alarm input
in the RS
Zone Sensor microblock.
•You can use a BACview to calibrate the temperature sensor in a stand-alone Room
Controller. You must add a BACnet Analog Value Parameter microblock to the control
program for the calibration offset. Connect the output of this microblock to an Analog
Network Output microblock addressed to:
RCD://calibration/temp
Creating a
custom control
program