Orion Lead Controller User Manual
www.wattmaster.com
Lead/Lag Controller
Technical Guide
Table of Contents
OVERVIEW ................................................................................................................................................. 3
Features ........................................................................................................................................................... 3
Step-By-Step Guide ......................................................................................................................................... 4
SECTION 1: LEAD/LAG WIRING & SETUP................................................................................................ 5
Environmental Requirements ........................................................................................................................... 5
Mounting .......................................................................................................................................................... 5
Power Supply ................................................................................................................................................... 5
Lead/Lag Controller Dimensions ...................................................................................................................... 5
Lead/Lag Wiring ............................................................................................................................................... 6
Communication Settings .................................................................................................................................. 7
Addressing and Baud Rate Selection .............................................................................................................. 8
SECTION 2: INSTALLING PRISM 2........................................................................................................... 9
SECTION 3: LEAD/LAG NAVIGATION AND STATUS ............................................................................... 10
SECTION 4: CONFIGURING ANALOG INPUTS ....................................................................................... 13
SECTION 5: CONFIGURING BINARY INPUTS ........................................................................................ 17
SECTION 6: CONFIGURING RELAYS...................................................................................................... 20
SECTION 7: CONFIGURING ANALOG OUTPUTS ................................................................................... 25
SECTION 8: OUTDOOR STATUS & LEAD/LAG ENABLE ......................................................................... 31
SECTION 9: SETTING SCHEDULES ....................................................................................................... 32
SECTION 10: CONFIGURING ALARMS .................................................................................................. 36
SECTION 11: SAVING AND RESTORING SETPOINTS ............................................................................ 37
SECTION 12: PRINTING STATUS REPORTS .......................................................................................... 39
APPENDIX A: SAMPLE CONFIGURATIONS ............................................................................................ 41
APPENDIX B: USB DRIVER INSTALLATION ........................................................................................... 48
INDEX ...................................................................................................................................................... 50
2
WattMaster Controls, Inc.
8500 NW River Park Drive · Parkville , MO 64152
Toll Free Phone: 866-918-1100
PH: (816) 505-1100 · FAX: (816) 505-1101 ·
E-mail: mail@wattmaster.com
Visit our web site at www.wattmaster.com
www.wattmaster.com
WattMaster Controls, Inc. assumes no responsibility for errors
or omissions.
This document is subject to change without notice.
Form: WM-LEADLAG-TGD-01A
Copyright December 2013 WattMaster Controls, Inc.
Lead/Lag Controller Technical Guide
Overview
Lead/Lag Controller Overview
Overview
The OE338-23-LL Lead/Lag Controller is used for controlling
multiple pumps or HVAC units that require equal run time. The fi rst
application—Lead/Lag—is for controlling up to (4) sets of devices,
and the second application—2 Lead/1 Lag—is for controlling (3)
devices where (2) of the devices will be running at a time.
The Lead/Lag Controller has an on-board CommLink that provides
for stand-alone programming and monitoring via a direct USB
connection to a computer running Prism 2 software. If used on a
networked system that has an external CommLink, this on-board
CommLink would not be used.
The Lead/Lag Controller has (8) confi gurable analog inputs which
will accept signals from thermistor temperature sensors or from
4-20mA or 0-5VDC transmitters. The inputs are set for the desired
scaling by means of a jumper bar.
An additional modular input is available for WattMaster communicating sensors. The Lead/Lag Controller has (8) wet contact binary
inputs that can be confi gured for either normally open or normally
closed operation. Also available are (8) relay outputs for on/off
control and (4) analog outputs (0-10VDC) for modulating control.
There are (4) separate two events per day schedules which can be
assigned to any input or output for operational control or for alarm
recognition based on time of day.
NOTE: The Lead/Lag Controller contains no user-serviceable
parts. Contact qualifi ed technical personnel if your
Controller is not operating correctly.
Schedules can be confi gured to broadcast to other
WattMaster HVAC equipment installed on the same
communications loop as the Lead/Lag Controller
Can be confi gured using a computer with Prism 2
software installed
Can be operated Stand-Alone or connected to a
networked system
On-board CommLink for Stand-Alone programming
using a USB connection to a computer running Prism 2
software
Lead Lag Operation
The fi rst application option is the Lead/Lag operation. With the Lead/
Lag application, you can confi gure one “Lead” device and one or
more ”Lag” devices.
For example, if you have three pumps, but only one runs at a time
(Lead/Lag/Lag), the Lead/Lag Controller will run the fi rst pump for
a specifi ed period of time, then run the second for that amount of
time, and then fi nally run the third for that amount of time.
If any of the pumps fail, the Controller will switch to the next one
and generate an alarm. You can have multiple Lead/Lag functions
on the controller. For example, since the Controller has 8 relay
outputs, you could have up to 4 Lead/Lag combinations. Relays 1
and 2 could Lead/Lag the fi rst 2 pumps, relays 3 and 4 could Lead/
Lag the second set of pumps, etc. Or, you could have two sets of
Lead/Lag/Lag/Lag.
Features
The Lead/Lag Controller provides the following:
8 confi gurable analog inputs
8 wet contact binary inputs confi gured for normally open
or normally closed operation
8 relay outputs for on/off control
4 analog outputs (0-10VDC) for modulating control
E-BUS port for WattMaster communicating sensors
4 separate 2 events per day schedules which can be
assigned to any output for operational control or
alarm recognition based on time of day
Lead/Lag Controller Technical Guide
2 Lead / 1 Lag Operation
The second application option is the 2 Lead/1 Lag operation. The
2 Lead/1 Lag operation is used to control three devices to maintain
equal run times, where two of them are running at the same time.
The run time and failure operation would be the same as described
above. Only one “2 Lead/1 Lag” function can be confi gured on the
controller.
3
Step-By-Step Guide
Step-By-Step Guide
Zone
Zone
Step-By-Step Guide
This guide will lead you through each step in confi guring your Lead/
Lag Controller. Below is a quick overview of each step.
Section 1: Lead/Lag Controller Wiring & Setup—This sec-
tion explains how to mount and wire your Lead/Lag Controller
properly. It also explains how to set the address and baud rate for
your particular system.
Section 2: Prism 2 Installation—This section explains how to
install Prism 2 software required to program your Lead/Lag Controller. If you are not familiar with the Prism 2 software program,
please refer to the Prism 2 Technical Guide which can be down-
loaded from the Orion Controls website: www.orioncontrols.com/
literature-new.html.
Section 3: Lead/Lag Controller Personalization & Status—
This section explains how to individualize and access Lead/Lag
Controllers when more than one is installed and also provides an
overview of the Lead/Lag Controller Status Screens.
Section 4: Confi guring Analog Inputs—This section explains
how to confi gure analog inputs, individualize analog input descrip-
tions, and calibrate thermistor sensors, and override and clear other
analog input values.
Section 5: Confi guring Binary Inputs—This section explains
how to confi gure binary inputs, individualize binary input descrip-
tions, and override binary inputs.
Section 7: Confi guring Analog Outputs—This section explains
how to confi gure analog outputs, individualize analog output descrip-
tions, override voltages, and cancel overrides.
Section 8: Outdoor Status and Lead Lag Enable—This section
explains the Override Status and Lead/Lag Enable Status.
Section 9: Setting Schedules—This section describes how
to confi gure daily and holiday schedules, perform schedule force
modes, and other scheduling functions.
Section 10: Confi guring Alarms—This section explains how to
confi gure and view alarms.
Section 11: Saving and Copying Setpoints—This section
explains how to save Lead/Lag setpoints to a fi le on your computer
and how to restore Lead/Lag setpoints once you have saved them
to a fi le. It also describes how to Load the Factory Default Settings.
Section 12: Printing Daily Status Reports—This section ex-
plains how to view and print Daily Status Reports.
Appendix A—This appendix provides Sample Confi gurations.
Appendix B—This appendix explains USB Driver Installation.
Index—The index provides page numbers for easy reference to
quickly fi nd the information you need.
Section 6: Confi guring Relays—This section explains how to
confi gure relay outputs and individualize relay descriptions.
4
Lead/Lag Controller Technical Guide
Section 1: Lead/Lag Wiring & Setup
Dimensions and Mounting
Environmental Requirements
The Lead/Lag Controller needs to be installed in an environment that
can maintain a temperature range between -30°F and 150°F and not
exceed 90% RH levels (non-condensing).
Mounting
The Lead/Lag Controller is housed in a plastic enclosure. It is designed to be mounted by using the 3 mounting holes in the enclosure
base. It is important to mount the module in a location that is free
from extreme high or low temperatures, moisture, dust, and dirt. Be
careful not to damage the electronic components when mounting
the module.
See Figure 1 for Controller dimensions (in inches).
Power Supply
The Lead/Lag Controller requires a 24 VAC power connection with
a minimum rating of 8 VA.
WARNING: Observe polarity! All boards must be wired
GND-to-GND and 24 VAC-to-VAC. Failure to
observe polarity could result in damage to the
boards.
Figure 1: Lead/Lag Controller Dimensions
Lead/Lag Controller Technical Guide
5
Section 1: Lead/Lag Wiring & Setup
Installation & Wiring
Important Wiring Considerations
Please read carefully and apply the following information when
wiring the Lead/Lag Controller:
1. To operate the Lead/Lag Controller, you must connect power
to the 24 VAC input terminal block.
All Communication Loop Wiring Is
Straight Through
T To T, R To R, SHLD To SHLD
Local Loop RS-485
Connect To Next Device
On The Local Loop
CommLink Jumpers
Both On = Use On Board CommLink
Both Off - Use External CommLink
Binary Inputs BIN1Through BIN8
Configured for The Following:
1. Not Used
2. Normally Closed Operation
3. Normally Open Operation
4. Read Global Binary
Analog Inputs AI1Through AI8
Configured For the Following:
1. Thermistor 10K Ohm Type III
Temperature Sensors (Fahrenheit)
2. Thermistor 10K Ohm Type III
Temperature Sensors (Celsius)
3. 4 - 20mA User Scaled
4. 0 - 5 vdc User Scaled
5. Read Global Analog Broadcast from
another Controller
6. Communicating Temperature Sensor
7. Communicating Humidity Sensor
8. Communicating Carbon Dioxide
Jumpers - Typical
Jumpers Must Be Set
Correctly For The Type Of
Input You Require.
9600 Baud
BINARY
INPUTS
ANALOG
INPUTS
VDC
OUTPUTS
5 VDC & 24VDC
Power For
Sensors
LOOPCOMM
T-
SH
R+
TB1
COM
COM
COM
COM
TB3
GND
GND
GND
GND
TB7
+24V
+5V
GND
TB8
ON BOA
COMMLI
CONNEC
R38
BIN1
300
D6
R41
BIN2
300
D7
R43
300
BIN3
R47
D8
300
BIN4
D9
BIN5
300
D10
300
BIN6
D11
300
BIN7
R61R59R55R51
D12
300
BIN8
D13
CUTTO ISOLATE
COMFROM GND
4-20mA
THERM
0-10v
0-5v
AI1
AI1
AI2
AI3
AI2
AI4
AI5
AI3
AI6
AI7
AI4
AI8
AI5
AI6
AI7
AI8
OE338-23-LL
Lead Lag Controller
RS-485 COMMUNICATION LOOP. WIRE
“R” TO“R”, “T” TO “T” “SHLD” TO “SHLD”
www.wattmaster.com
OE338-23-LL
LEAD/LAG CONTROLLER
RLY1 =
RLY2 =
RLY3 =
RLY4 =
AI1 =
AI2 = BI2 = AO2 =
AI3 = BI3 = AO3 =
AI4 = BI4 = AO4 =
AI5 = BI5 =
AI6 = BI6 =
AI7 = BI7 =
AI8 = BI8 =
ANALOG
INPUT
JUMPERS
4-20mA
0-10V
0-5V
THERM
AI1
AI2
AI3
AI4
AI5
AI6
AI7
AI8
VDC
OUTPUTS
+ 24VDC
+ 5VDC
GND
24 VAC
GND
2. Check all wiring leads at the terminal block for tightness.
Be sure that wire strands do not stick out and touch adjacent
terminals. Confi rm that all sensors required for your system are
mounted in the appropriate location and wired into the correct
terminals. See Figure 2 for wiring.
24VAC Power
For Relay Outputs
YS102432 REV 3
®
#LB102191
Rev.: 1A
WATTMASTER CONTROLS
RLY1
RLY2
RLY3
RLY4
COMMON
RLY1
RLY2
RLY3
RLY4
COMMON
SERIAL #
1002
R74
U17
AOUT1-2
.1uF
C36
R97
1002
U19
AOUT3-4
.1uF
C46
GND
.1uF
ADDRESS
1002
1002
1002
1002
1002
1002
1002
1002
SW1
MADE IN USA
AOUT1
AOUT2
AOUT3
AOUT4
GND
GND
STATUS1
STATUS2
EBUS
POWER
C21
R109
TB2
RELAY
OUTPUTS
TB4
ANALOG
OUTPUTS
TB6
R21
R16
R14
8 Relay Outputs Are Available For
On/Off Control Of Equipment
Configured For the Following:
1. Lead Relay for Lead/Lag Control
2. Lag Relay for Lead/Lag Control
Analog Outputs AOUT1 through
AOUT4 Provide (4) 0-10 VDC
Outputs Configured For The
Following:
1. Not Configured
1002
1002
1002
1002
ADD
1
2
4
8
16
32
LOOP
BAUD
1
2
C14
.01uF
2. Direct Acting Floating Point
3. Reverse Acting Floating Point
4. Direct Acting PID
5. Reverse Acting PID
ADDRESS Dipswitch
is Used for Setting
the Address and
Baud Rate.
RELAYCONTACT
RATING IS 1AMP
MAX @ 24 VAC
RELAY1
RELAY2
RELAY3
RELAY4
COMMON
RELAY5
LED BLINK CODES
USB
E-BUS
PORT
PORT
RELAY6
RELAY7
RELAY8
COMMON
WattMaster Label
RLY5 =
RLY6 =
RLY7 =
RLY8 =
BI1 = AO1 =
LED NAME STATUS1 STATUS2
NORMAL OPERATION 0 1
NOTES:
1.)ANALOG INPUT JUMPER SETTINGS MUST BE
SET FORYOUR SPECIFIC INPUT DEVICE
REQUIREMENT.
2.) IT IS RECOMMENDEDTHAT YOU WRITE THE
DESCRIPTION OF THE INPUT,AND/OR
OUTPUTS YOUARE CONNECTING TO THE
CONTROLLER IN THE BOXES PROVIDEDABOVE
USINGA PERMANENT MARKER (SHARPIE) FOR
FUTURE REFERENCE.
24 VAC POWER ONLY
WARNING!POLARITY MUST BE OBSERVED
OR THE CONTROLLER WILL BE DAMAGED
GND
+24VAC
Line Voltage
Warning:
24 VAC Must Be Connected So That All
Ground Wires Remain Common. Failure To
Do So Will Result In Damage To The
Controller
NOTES:
1.)24 VAC Must Be Connected So
That All Ground Wires Remain
Common.
2.)All Wiring To Be In Accordance With
Local And National Electrical Codes
and Specifications.
3.)All Communication Wiring To Be 18
Ga. Minimum, 2 Conductor Twisted
Pair With Shield. Belden #82760 Or
Equivalent.
4.)It Is Recommended That The
Address Switch Is Set Before
Installation.
Figure 2: Lead/Lag Controller Wiring Diagram
6
24 VAC
Transformer
8 VA
Minimum
EBC E-BUS Cable
Connect to
Communicating Sensor
USB Cable
Connect to Computer with
Prism 2 Software Installed For
Stand-Alone Programming
Lead/Lag Controller Technical Guide
Section 1: Lead/Lag Wiring & Setup
Communication Settings
Before Applying Power
In order to have a trouble free start-up, it is important to follow a
few simple procedures. Before applying power for the fi rst time, it
is very important to correctly address the controller and run through
a few simple checks.
Communication Settings
Stand Alone Operation
The Lead/Lag Controller has an on-board CommLink that is used
during Stand-Alone Operation. When confi gured for Stand-Alone
operation, a computer running Prism 2 software can be connected
directly to the USB port located at the bottom of the Lead/Lag
Controller for programming and monitoring. In order to operate in
Stand-Alone Mode, two things need to be set. First, both CommLink
Jumpers found on the upper left hand side of the board need to be set
to ON. See Figure 3 for details. Second, the Baud Rate determined
by setting ADDRESS Dipswitches 7 and 8 needs to be set to OFF/
ON. See Figure 4, page 8 for details.
NOTE: If using the Internal CommLink, you must set up
the USB drivers. See Appendix B, page 48.
Network Operation
The Lead/Lag Controller can be confi gured for connection to a
networked system that has an external CommLink. In this case, the
on-board CommLink would not be used. For this confi guration,
two things need to be set. First, both CommLink Jumpers found on
the upper left found on the upper left hand side of the board need
to be set to OFF. See Figure 3 for details. Second, the Baud Rate
determined by setting ADDRESS Dipswitches 7 and 8 needs to be
set to OFF/OFF if using a CommLink IV and to OFF/ON if using a
CommLink 5. See Figure 4, page 8 for details.
Figure 3: Lead/Lag Controller Address Switch Setting
Lead/Lag Controller Technical Guide
7
Section 1: Lead/Lag Wiring & Setup
Addressing and Baud Rate Settings
Zone
Zone
Controller Addressing and Baud Rate
The Lead/Lag Controller is equipped with address switches. When
using Prism 2 to program and confi gure the Lead/Lag Controller,
you would enter this address to communicate with the controller.
When the system is to be connected to other HVAC unit controllers
on a communication loop, each controller’s address switch must be
set with a unique address between 1 and 59.
Address switches 7 and 8 are used for the baud rate selection. See
Figure 4 below for baud rate setting information.
Figure 4: Lead/Lag Controller Address Switch Setting
8
Lead/Lag Controller Technical Guide
Section 2: Installing Prism 2
Initialization and Prism 2 Software
Initialization
On system power up, there is an approximately 30-second startup
delay where all default setpoints are initialized, LED’s are initialized,
and all outputs are turned off.
When power is fi rst applied, the STATUS1 LED will fl ash intermit-
tently for about 10 seconds. After a short pause, STATUS1 LED
and STATUS2 LED will fl ash out the controller address. STATUS1
LED will fl ash to represent the tens position. STATUS2 LED will
fl ash to represent the ones position. After the controller address is
complete, there will be a short pause while the initialization process
is completed. There will be no controller operation or communications during initialization. After initialization, STATUS2 LED will
continuously fl ash the status code—(1) blink indicates Normal
Operation; (2) blinks indicates a Push-Button Schedule Override
is in effect.
Example of a controller address of 25:
STATUS1 LED will fl ash 2 times. STATUS2 LED will fl ash 5 times.
Prism 2 Software
The next step is programming the controller for your specifi c require-
ments. In order to confi gure and program the Lead/Lag Controller,
you must use Prism 2 software. This gives you access to the status,
confi guration, and setpoint screens of the Lead/Lag Controller. The
software is distributed on CD or can be downloaded for free from
our website: www.wattmaster.com/techsupport.
If you are unfamiliar with Prism 2, we recommend that you reference
the Prism 2 Technical Guide to familiarize yourself with the program.
* NOTE: The Lead/Lag Controller has a built-in CommLink
that can be utilized in Stand-Alone Mode. See page 7 for
sett i ng up St and -A lone a nd Net work operations. In Net-
work Mode, you must have a CommLink IV or CommLink
5 installed in order to communicate between your computer and
the system. If remote communication is required, a WattMaster IPModule (Ethernet) must also be installed in the CommLink.
Software License
Prism 2 does not require any license agreement and may be freely
copied and distributed.
Support Information
WattMaster Controls provides Prism 2 installation and confi guration
support. Call (866) 918-1100 for free, direct telephone support or
(816) 505-1100 to talk to a Technical Support Representative. Support for all telephone services is available Monday through Friday,
7:00 AM to 5:00 PM central standard time.
NOTE: WattMaster Controls Technical Support can-
not troubleshoot internal PC and/or Windows®-based
operating system problems.
NOTE: WattMaster Controls Technical Support can-
not troubleshoot fi rewalls, r oute rs, a nd/o r p robl ems
on a customer’s internal or external network. An IT
professional may need to be consulted.
System Requirements
To use Prism 2 you must have a computer that meets or exceeds the
following requirements:
Operating System
• Microsoft
Windows
NOTE: Prism 2 is not intended for a server/client
environment.
Minimum Hardware
• Windows
®
Windows® 2000/ Windows® Vista,
®
7 or Windows® 8
®
compatible computer
• Pentium 2 GHz Processor (Pentium 4 2 GHz or
greater, Recommended)
• 1 GB RAM (or greater)
• 120 MB hard drive space
• XVGA (1024 x 768) adapter and monitor
(1280 x 1024, Recommended)
• Network card for TCP/IP connection when IP
Module is used.
• CommLink*
Lead/Lag Controller Technical Guide
Operator
Interface
Figure 5: Computer with Prism 2 Software Installed
and CommLink
9
Section 3: Lead/Lag & 2 Lead/1 Lag Navigation & Status
Unit Selection
Selecting and Naming Lead/Lag Controllers
Selecting Lead/Lag Controllers
NOTE: See the Prism 2 Technical Guide for instructions on
setting up the job site and doing a search for units.
From the Prism 2 Main Screen, click on the Lead/Lag Controller
address in the Unit Selection W indow. In this example, it is address
3. See Figure 6.
Selected Name Dialog Box
Figure 6: Prism 2 Main Screen Lead/Lag Controller Selection
Naming Lead/Lag Controllers
If you have more than one Lead/Lag Controller, you can rename it in
the Selected Name Dialog Box. See Figur e 7. Many users name their
Lead/Lag Controller according to the application that it performs.
Figure 7: Naming the Lead/Lag Controller
10
Lead/Lag Controller Technical Guide
Section 3: Lead/Lag & 2 Lead/1 Lag Navigation & Status
Lead/Lag Status Screen
Lead/Lag Status Screen
Figure 8 depicts the Lead/Lag Status Screen. To access the Lead/
Lag Status Screen, you might need to click the <Switch to Lead/
Lag> button found on the lower left of the 2 Lead/1 Lag Status
Screen (Figure 9, page 12).
The screen is divided into separate windows as follows: Analog In-
puts, Binary Inputs, Relays, Analog Outputs, Outdoor Status, Lead/
Lag Enables, Schedule Status, and Alarms.
The Lead/Lag Status Screen Toolbar also gives you the options to
access Reset Factory Defaults, Save and Restore Setpoints, and Print
a Status Report for the current day.
The Lead/Lag Status Screen provides real-time live updates of the
current operating conditions and is used to access the various setpoint
and confi guration options.
No control takes place until you confi gure the operation of the Lead/
Lag application.
Once you confi gure your inputs, outputs, and operating schedules,
everything you need to monitor the Lead/Lag application is found
on this Lead/Lag Status Screen.
The rest of this technical guide explains each component on this
screen and provides detailed instructions for confi guring the data.
The following is a list of topics and their page numbers:
Analog Inputs, page 13
Binary Inputs, page 17
Relays, page 20
Analog Outputs, page 25
Outdoor Status, page 31
Lead/Lag Enables, page 31
Schedules, page 32
Confi guring Alarms, page 36
From the Top Toolbar:
Setpoints, Restore Defaults, page 37
Setpoints, Save and Restore, pages 37 & 38
Print Status Report, page 39
Figure 8: Lead/Lag Status Screen
Lead/Lag Controller Technical Guide
11
Section 3: Lead/Lag & 2 Lead/1 Lag Navigation & Status
2 Lead / 1 Lag Status Screen
2 Lead / 1 Lag Status Screen
Figure 9 depicts the 2 Lead/1 Lag Status Screen. To access the 2
Lead/1 Lag Status Screen, you might need to click the
Lead/1 Lag>
Screen (Figure 8, page 11).
The screen is divided into separate windows as follows: Analog In-
puts, Binary Inputs, Relays, Analog Outputs, Outdoor Status, Lead/
Lag Enables, Schedule Status, and Alarms.
The 2 Lead/1 Lag Status Screen Toolbar also gives you the options
to access Reset Factory Defaults, Save and Restore Setpoints, and
Print a Status Report for the current day.
The 2 Lead/1 Lag Status Screen provides real-time live updates of
the current operating conditions and is used to access the various
setpoint and confi guration options.
No control takes place until you confi gure the operation of the 2
Lead/1 Lag application.
button found on the lower left of the Lead/Lag Status
<Switch to 2
Once you confi gure your inputs, outputs, and operating schedules,
everything you need to monitor the 2 Lead/1 Lag application is found
on this 2 Lead/1 Lag Status Screen.
The rest of this technical guide explains each component on this
screen and provides detailed instructions for confi guring the data.
The following is a list of topics and their page numbers:
Analog Inputs, page 13
Binary Inputs, page 17
Relays, page 20
Analog Outputs, page 25
Outdoor Status, page 31
Lead/Lag Enables, page 31
Schedules, page 32
Confi guring Alarms, page 36
From the Top Toolbar:
Setpoints, Restore Defaults, page 37
Setpoints, Save and Restore, pages 37 & 38
Print Status Report, page 39
Figure 9: 2 Lead/1 Lag Status Screen
12
Lead/Lag Controller Technical Guide
Section 4: Confi guring Analog Inputs
Analog Inputs
The Analog Inputs W indow is located in the upper left-hand side of
the Lead/Lag Status Scr eens (Figures 8 & 9, pages 11 & 12). There
are 8 Analog Inputs. See Figure 10 for the Analog Inputs Window
component summary and the pages that follow for details.
Analog Inputs
Right or Left-click on any of the Analog Input name
fi elds to access the description entry box to add or
change the name of the Analog Input.
Left-Click in the data entry fi eld to confi gure the Analog
Input.
Right-Click on these fi elds to access the Calibration,
Override, and Clear Override.
The bell will light up to indicate that an alarm is on.
The Light bulb will light up when the Input is in the
Occupied Mode.
Figure 10: Analog Input Window Components and Navigation
Renaming Analog Inputs
To give an Analog Input a new name, click on the blue highlighted
Analog Input # fi eld and the Analog Input Data Entry Dialog Box
will open (Figure 11). Once you have typed in a new description,
<ENTER> to save. The maximum number of characters is 17.
press
Figure 11: Analog Input Data Entry Dialog Box
Lead/Lag Controller Technical Guide
13
Section 4: Confi guring Analog Inputs
Analog Input Confi guration Screen
Confi guring Analog Inputs
Left-click in the data entry fi eld in the Analog Inputs Window to open
the Analog Input Confi guration Window (Figure 12).
The eight analog inputs can be confi gured in several different ways.
Generally, the fi rst four inputs are the only ones used for Lead/Lag
control. These inputs can be used to generate an alarm and switch
from one device to another if the fi rst cannot maintain a temperature
or PSI setpoint. The others can be used to monitor various inputs.
The controlling devices can be set up to look at one sensor or each
device can have its own sensor.
The following confi gurations are available for each Analog Input:
Not Used
●
Thermistor Fahrenheit Temperature: 10K Ohm Type III
●
Scaled for Fahrenheit. Set jumper to the appropriate setting
(see Figure 2, page 6).
Thermistor Celsius Temperature: 10K Ohm Type III
●
Scaled for Celsius. Set jumper to the appropriate setting (see
Figure 2, page 6).
4 - 20mA User Scaled: 4-20mA User-Scaled Sensor. Set
●
jumper to the appropriate setting (see Figure 2, page 6).
0 - 5vdc User Scaled: Select this option if using a 0-5vdc
●
scaled sensor. Set jumper associated with this input to the
appropriate 0-5v setting (see Figure 2, page 6.)
●
Read Global Analog Broadcast Channel from Another
Controller
● Communicating Temperature Sensor ( OE217-02):
If using a WattMaster Communicating Temperature
Sensor with a modular cable, confi gure this input to read
the appropriate Communicating Sensor Address. Enter
an address from 1-8 in the < Communicating Sensor
Address>
fi eld and press <ENTER>.
Figure 12: Analog Input Confi guration Window
Communicating Humidity Sensor ( OE217-03): If using
●
a combination Temperature and Humidity Communicating
Sensor with a modular cable, confi gure one input to read
the temperature and another input to read the humidity,
both using the same Communicating Sensor address. Enter
an address from 1-8 in the <Communicating Sensor
Address>
●
Communicating Carbon Dioxide Sensor ( OE256-05
or OE256-07)
Sensor with a modular cable, confi gure this input to read
the appropriate Communicating Sensor Address. Enter
an address from 1-8 in the <Communicating Sensor
Address>
*NOTE: See the E-BUS Digital Room Sensor Technical Guide,
fi eld and press <ENTER>.*
: If using a WattMaster Communicating CO2
fi eld and press <ENTER>.*
E-BUS Wall-Mounted CO
or E-BUS Duct-Mounted CO
for information on how to address the communicating sensors.
Sensor Technical Guide,
2
Sensor T echnical Guide
2
14
Lead/Lag Controller Technical Guide
Section 4: Confi guring Analog Inputs
Sensor Reading, Scaling, and Override Duration
Sensor Reading Appendix
Figure 13: Sensor Reading Appendix Field
Select from the drop down list in the <Sensor Reading Appendix>
fi eld (Figure 13) to give the sensor reading a qualifi er.
●
None: No Appendix Required
● RH%: Humidity Percentage
%: Percentage
●
°F: Fahrenheit
●
°C: Celsius
●
PPM: Parts per Million
●
PSI: Pound per Square Inch
●
“WG: Inches of Water Gauge
●
“: Inches
●
Ft.: Feet
●
RPM: Revolutions per Minute
●
VDC: Volts D.C.
●
Number of Readings to Average
This function has the capability of averaging up to 25 sensor readings
before it displays a new value on one of the Lead/Lag Controller
Status Screens. Sensor values are read once per second.
Type the number of readings from this sensor you want to aver-
age in the <Number of Readings to Average> fi eld and press
<ENTER> to save. See Figure 15. Valid entries are from 1-25.
If you want the input sensor to only show its most current reading,
enter <1>.
Figure 15: Number of Readings to Average Field
User Scaling
The User Scaling Box allows you to set a Maximum and Minimum
Reading for the specifi c 4-20 mA or 0-5 vdc sensor you are using.
This means you can display values with ± 1, ± 0.1, ± 0.1± 0.01 or
higher resolutions. Just keep in mind that the maximum value that
can be sent from the controller is ±30,000, so if you have scaled your
reading to ± 0.001, then the maximum value you can send is ± 30
with the 3 additional decimal values (30.000). See Figure 16. Type
in the values and press <ENTER> to save.
BTU: British Thermal Unit
●
CFM: Cubic Feet per Minute
●
Hr: Hours
●
Min: Minutes
●
GPM: Gallons per Minute
●
kPa: Kilopascals
●
Sensor Scaling
All readings are user-scalable according to the number of digits
to the right of the decimal point. See Figure 14 and values and
examples below.
●
X 1 65°F
● X 10 65.5°F
● X 100 65.54°F
● X 1000 65.543°F
Figure 16: User Scaling Box
Figure 14: Sensor Scaling Field
Lead/Lag Controller Technical Guide
15
Section 4: Confi guring Analog Inputs
Calibrate, Override, and Clear Sensor Override
Calibrate, Override, and Clear Sensor
Override
Once confi gured, all readings can be overridden to specifi c values
for test purposes. Additionally, all thermistor sensors can also be
calibrated by entering positive or negative offsets to be applied to
the current readings.
Right-click in the data entry fi eld in the Analog Inputs Window to
open the Calibrate, Override, and Clear Sensor Override Pop-Up
Menu shown in Figure 17 and select the desired function.
Figure 17: Calibrate and Override Sensor
If you select Calibrate Sensor or Override Reading, the data entry
window as shown by Figure 18 will open. Left-click in the yellow
text fi eld, type in the desired value, and press <ENTER> to save.
Figure 18: Data Entry Field
Calibrate Sensor: Type a positive or negative offset that
●
will be applied to the current reading and press
to save. NOTE: The reading Offset can be from -100° to +
100°. This function only applies to Thermistor Temperature
Sensors.
Override Reading: Type a value that will override the
●
actual sensor reading and press <ENTER> to save.
Clear Sensor Override: Select to clear a sensor override
●
that was entered.
<ENTER>
16
Lead/Lag Controller Technical Guide
Section 5: Confi guring Binary Inputs
Binary Inputs
The Binary Inputs W indow is located in the upper center of the Lead/
Lag Controller Status Scr eens (Figures 8 & 9, pages 1 1 & 12). There
are 8 Binary Inputs. Binary Inputs are used as either Enable Inputs
or Proof Inputs. These Binary Inputs are 24 VAC wet contacts. See
Figure 19 for the Binary Inputs Window component details.
Components and Navigation
Right or Left-click on any of the Binary Input name
fi elds to access the description entry box to add or
change the name of the Binary Input.
Left-click on the Status box to confi gure the Binary
Input.
Right-click to override the Binary Input.
Figure 19: Binary Input Window Components and Navigation
Renaming Binary Inputs
To give the Binary Input a new name, click on the blue highlighted
Binary Input # fi eld and the Binary Input Data Entry Dialog Box
will open (Figure 20). Once you have typed in a new description
(max 17 characters), press <ENTER> to save.
Enable Inputs
The fi rst 4 Binary Inputs are Enable Inputs—Inputs #1-#4. Enable
Inputs can be used to activate the Lead/Lag devices. Confi guring
the Lead/Lag devices to use the Enable (Activation) Inputs is done
in the Relay Confi guration Screens.
Proof Inputs
The last 4 Binary Inputs are Proof Inputs—Inputs #5-#8. Proof Inputs
are used to prove that the devices are operating correctly. They can
be such things as air fl ow switches, water fl ow switches, or pressure
differential switches. Confi guring the Lead/Lag devices to use the
Figure 20: Binary Input Data Entry Dialog Box
Proof Inputs is done in the Relay Confi guration Screens.
Lead/Lag Controller Technical Guide
17
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