Prolon M2000 SERIES Installation instructions

Hardware Guide
Heatpump Controller
M2000 Series
Specifications and Operational Guide
REV 6.3
www.proloncontrols.com
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PL-HRDW-M2000HP-C/W-EN-V63

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Table of Contents
GENERAL INFORMATION............................................................................................................ 3!
PL-M2000 Heatpump Controller.................................................................................................................... 3!
Description ...................................................................................................................................................................3!
General Behaviour .......................................................................................................................................................3!
Operating Sequence ..................................................................................................................................... 4!
General ........................................................................................................................................................................4!
Occupied Mode............................................................................................................................................................4!
Unoccupied Mode ........................................................................................................................................................5!
COMPONENTS ................................................................................................................................. 6!
Component Identification............................................................................................................................... 6!
LEDs and Switches ....................................................................................................................................... 7!
LED Descriptions: ........................................................................................................................................................7!
HAND/OFF/AUTO Switches.......................................................................................................................... 8!
Jumpers......................................................................................................................................................... 9!
Input and Output Identification .................................................................................................................... 10!
Addressing Dipswitch Configuration for Network Communication .............................................................. 11!
INPUTS ............................................................................................................................................. 12!
Temperature Sensors.................................................................................................................................. 12!
Room Sensors............................................................................................................................................. 13!
Proof of Fan................................................................................................................................................. 13!
Dry Contact for Clogged Filter or Schedule Override.................................................................................. 14!
Dry Contact for Alarm Signal....................................................................................................................... 14!
Static Pressure and CO2............................................................................................................................. 15!
OUTPUTS ......................................................................................................................................... 16!
Output Specifications .................................................................................................................................. 16!
Typical Connection of Triac Outputs 1 to 5 ................................................................................................. 17!
Typical Connection of Analog Outputs 1 to 3 .............................................................................................. 17!
POWER SOURCE & NETWORK................................................................................................................ 18!
Power Source.............................................................................................................................................. 18!
Network Communication ............................................................................................................................. 18!
Technical Specifications ................................................................................................................... 19!
Compliance........................................................................................................................................ 20!
FCC User Information ................................................................................................................................. 20!
Industry Canada .......................................................................................................................................... 20!
OVERALL DIMENSIONS.............................................................................................................. 21!

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GENERAL INFORMATION
PL-M2000 Heatpump Controller
Description
The ProLon PL-M2000 Heatpump controller is a
microprocessor-based controller designed to operate
residential or commercial heatpump equipment. It
uses PI (Proportional-Integral) control loops and acts
as a master when used on a network with ProLon
zone controllers.
The Standalone model of this controller will not act
as a master to other ProLon zone controllers, relying
instead on the demand provided by a local sensor.
General Behaviour
Although fully configurable, the ProLon M2000 Heatpump controller uses pre-established control
sequences or ’’profiles’’ to operate specific HVAC equipment with dedicated output functions. These can
be fully optimized to obtain the best results for each type of system. Numerous parameters enable the
modification or fine tuning of the fan, the compressor outputs, the action of the heating outputs (On-or-
Off / pulsed / modulating), the bypass or VFD, outside air dampers, CO2levels, the proportional bands,
integration times, differentials, operational ranges, setpoints and a whole range of limits and safeguards.
The various programming options also allow the user to modify the schedule, unoccupied mode settings,
morning warm-up and supply air pre-heating sequences as well as the network demand control strategy
best suited for the building space it is controlling. All these parameters can be accessed by using the
ProLon Focus software.

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Operating Sequence
General
The ProLon M2000 Heatpump controller receives readings from three different temperature sensors:
outside air, return air and supply air. It operates on a configurable schedule using an internal real-time
clock. Also, as a Master device, it receives data from the zone controllers sent on the network bus. The
controller then analyzes all the data and demands sent by the zones and commands the appropriate
outputs to respond accordingly, within parameters set by the temperature sensors and other safety
limits. The Master sends back information on its network such as supply air temperature, occupancy
status and other relevant data for the zone controllers to use.
Occupied Mode
The controller operates the fan. When there is a cooling demand from the zones, the Heatpump
controller will put the reversing valve into cooling mode and activate the compressor outputs as long as
all temperature limits, delays and other related parameters are respected. Once the demand is satisfied,
the outputs are deactivated within the prescribed minimum on/off time delays.
When there is a heating demand from the zones and the outside temperature is above the low balance
point, the Heatpump controller will put the reversing valve into heating mode and activate the
compressor outputs as long as all temperature limits, delays and other related parameters are
respected. If the outside temperature is below the low balance point, the controller will activate the
auxiliary heating outputs. If the heatpump is configured for water-to-air mode, the low balance point is
ignored and the use of compressors is permitted all year round. Protection sequences are in place that
will activate auxiliary heat upon failure of the compressors. Once the demand is satisfied, the outputs
are deactivated within the prescribed minimum on/off time delays.
When there is no cooling or heating demand from the zones, only the fan is enabled. If the heating
equipment permits, a supply air pre-heating sequence may be enabled. This allows cold mixed air to be
heated to a more comfortable level for subsequent use by the zones for ventilation.

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Unoccupied Mode
The fan can be configured to operate in intermittent mode. When there is a cooling or heating demand
from any single zone, the Rooftop controller will activate the fan and the necessary cooling or heating
outputs as long as all temperature limits, delays and other related parameter are respected. Once the
demand is satisfied, the fan and any cooling/heating outputs are deactivated within the minimum on/off
time delays set.
During the unoccupied period, the Rooftop controller can be driven by the highest demand on the
network and will operate the fan and relevant outputs accordingly.

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COMPONENTS
Component Identification
A
B
C
D
E
F
I
J
G
H
Legend:
A= Addressing Dipswitch
B= AUTO/OFF/HAND Switches
C= RS485 INT port for interface communication (RJ45 plug and screw connectors are in
parallel)
D = Analog outputs (3)
E= Digital outputs (5)
F= Analog inputs (9)
G = RS485 NET port for network communication
H = Terminal Block for 24VAC (class 2 transformer)
I= Jumpers for terminating and bias resistors for the INT port
J = Jumpers for terminating and bias resistors for the NET port

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LEDs and Switches
The M2000 has an LED block on the front of the casing whose LEDs are linked to different functions and
outputs of the controller. Each LED is individually identified to help the user make a quick visual
diagnostic of the controller’s activity and status.
INTSND
INTREC
AO 3
AO 2
AO 1
DO 5
DO 4
DO 3
DO 2
DO 1
24 VAC
5 VDC
HBEAT
STAT
NETSND
NETREC
LED Descriptions:
•24 VAC: The M2000 is receiving 24 VAC from the power source.
•5V DC: The microchip and other components on the M2000 are being powered successfully by
a 5V DC source derived from the 24VAC source.
•HBEAT: When this LED is blinking, the microchip is active and the controller’s program is
running (normal). When this LED is ON and steady, the M2000 is inactive and the microchip is
awaiting programming (you must use ProLon’s Focus software to reprogram the microchip).
•STAT: Reserved.
•NETSND: Indicates transmission of data onto the network communication bus.
•NETREC: Indicates reception of data from the network communication bus.
•INTSND: Indicates transmission of data onto the interface communication bus.
•INTREC: Indicates reception of data from the interface communication bus.
•AO3: The intensity of the LED represents the voltage present on analog output 3.
•AO2: The intensity of the LED represents the voltage present on analog output 2.

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•AO1: The intensity of the LED represents the voltage present on analog output 1.
•DO5: Represents the activity of digital output 5.
•DO4: Represents the activity of digital output 4.
•DO3: Represents the activity of digital output 3.
•DO2: Represents the activity of digital output 2.
•DO1: Represents the activity of digital output 1.
HAND/OFF/AUTO Switches
Each output on the M2000 has a dedicated switch that lets the user manually override the activity of the
output. “HAND” mode (switch at rightmost position) fully activates the output (24 VAC for digital outputs,
10VDC for analog outputs). “OFF” (switch at center) deactivates the output and “AUTO” (switch at left)
returns control of the output to the program in the M2000’s microchip.

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BIAS1
BIAS2
TERM
AI9
AI8
AI7
AI6
AI5
AI4
AI3
AI2
AI1
Jumpers
The M2000 has jumpers that are externally accessible (see Figure 1), as well as jumpers that are on the
lower internal board (see Figure 2), that allow for configuration of various hardware elements.
INT: These are the jumpers for the bias and terminating resistors used for the interface
communication bus. See the ProLon network guide for information about bias and
terminating resistors.
NET: These are the jumpers for the bias and terminating resistors used for the network
communication bus. See the ProLon network guide for information about bias and
terminating resistors.
AI 1 - 9: These jumpers allow the user to select the signal mode of the associated analog input.
0-5 volts 4-20 mA THERMISTOR
INT
NET
Figure 1: Location of the EXTERNAL jumpers
Figure 2: Location of the INTERNAL jumpers

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Input and Output Identification
All the inputs and outputs of the M2000 use pluggable screw type terminal blocks with elevator style
clamping, which make connections easier and more secure.
For incoming communication from a remote computer or network controller, dual RJ45 type connectors
are available in parallel with screw type terminal blocks. The RJ45 connectors allow the use of premade
CAT5 cables for simple plug-and-play RS485 communication. These RJ45 connectors follow the
Modbus pinout specification for RS485 communication.
RJ45 Pinout
1"""2"""3"""4"""5"""6"""7"""8
AB GND
(+)(-)
Controller’s power source
Unit’s R&Cterminals (24VAC class 2)
HP:$Outgoing$RS485$network$
communication$(to$zones)
HPS:$Incoming$communication$from$
remote$computer$or$network$controller
Bottom Row:
Common for all outputs
DO 1 - Fan (G)
DO 2 - Compressor 1 (Y1)
DO 3 - Compressor 2 (Y2)
DO 4 - Rev Valve
AO 1 Preheating / Mod. Heat
AO 2 Economizer
AO 3 Bypass / VSD
Incoming$communication$from$
remote$computer,$network$
controller$or$digital$sensor$(HPS)
(Dual$RJ45$and$terminal$blocks)
2$$$$1
32$$$$1
4$$$$35
3$$$$4 5$$$$6 7$$$$8 91$$$$2
A
B
A
B
24
VAC
Return air temperature sensor (10K thermistor)
Bottom Row:
Common for all inputs
Outside air temp sensor (10K thermistor) /
Supply water temp sensor (10K thermistor)
Supply air temperature sensor (10K thermistor)
Zone temperature sensor (10K thermistor)
Zone temperature setpoint (0-10K potentiometer)
Ext dry contact for alarm / CO2 sensor (4-20 mA)
External dry contact for proof of fan
Static pressure (0-5 / 1-5V) (1 / 1.5 / 2 / 2.5 in)
Dry contact for clogged filter / Dry contact for schedule
override / Supply Water Temp (10K thermistor)
DO 5 - Aux Heat

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Addressing Dipswitch Configuration for Network
Communication
For proper communication, a unique address must be configured on each controller by setting the first 7
switches on the addressing dipswitch to the desired value.
These switches are numbered from 1 to 7 and represent a binary value from 1 to 64 (1, 2, 4, 8, 16, 32, and
64 respectively). The last switch (#8) is reserved. The value of each switch that is in the ON position is added
together to form the numerical address of the controller.
The example in Figure 3 shows the switches 1, 2 and 4 in the ON position. Therefore, the corresponding
values are 1, 2 and 8, giving an address sum of 11.
The ProLon network allows a maximum of 127 addresses; therefore 127 controllers.
12 3 4 5 6 7
Figure 3: Addressing Dipswitch

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INPUTS
Temperature Sensors
The M2000 Heatpump controller has three analog inputs that monitor outside air, supply air and return
air temperatures (see Figure 4) and will integrate these readings into its control sequence. The sensors
used are standard 10k type thermistors that share a single common connection.
Alternatively, the supply air temperature can be retrieved from a zone controller that has its own supply
sensor and belongs to the M2000’s network.
The outside air temperature can be also be provided by an alternate source. If a network controller is
present on the network, it can retrieve the outside temperature reading from one controller and distribute
it to any other controllers on the network
Figure 4: Connecting the temperature sensors

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Room Sensors
The M2000 can receive the setpoint and temperature from a specific room when a PL-RS analog
thermostat is connected to it. The M2000 will then automatically integrate this information into its control
sequence. The setpoint may also simply be set by software. The PL-RS series room sensors are
connected using a 3-conductor cable (see Figure 5).
1Jumper from pins 1 to 3
1
PL-RS room sensor
1 2 3 4
3 4 5 6 7 8 91 2
Figure 5: Typical wiring of the PL-RS room sensor to the controller
Proof of Fan
The M2000 has an analog input dedicated to the proof of fan signal. Please refer to Figure 6 to see how
to correctly connect it to analog input 7. To indicate proof of fan, the contact must be closed. If no proof
of fan signal is available, you must short analog input 7, or else the controller will interpret the absence
of signal as a fan malfunction and no heating or cooling action will be taken.
Proof of
Fan
3 4 5 6 7 8 91 2
Figure 6: Connecting the proof of fan contact to the controller

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Dry Contact for Clogged Filter or Schedule Override
Analog input 4 on the M2000 can also be configured as a dry contact input for either a clogged filter
sensor or as a schedule override input. Please refer to Figure 7 to see proper connection.
•Clogged filter sensor: To indicate that the filter is clogged, the contact must be closed.
•Schedule Override: Closing the contact causes the M2000 to immediately return to occupied
mode from unoccupied mode. The M2000 remains in occupied mode as long as the contact is
held closed. If it was already in occupied mode, there is no change.
Clogged
Filter
3 4 5 6 7 8 91 2
Schedule
Override
OR
Figure 7: Connecting the dry contact input to the controller
Dry Contact for Alarm Signal
The M2000 has an analog input which can be designated as an alarm signal input. Please refer to
Figure 8 to see how to correctly connect it to analog input 8. To signal an alarm, the contact must be
closed. Closing this contact will prevent the use of the compressors, either in heating or cooling.
Auxiliary heating will still activate as required.
Alarm
3 4 5 6 7 8 91 2
Figure 8: Connecting the alarm contact to the controller

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Static Pressure and CO2
Analog inputs 8 and 9 on the M2000 heatpump controller are dedicated to the CO2and static pressure
sensors, respectively. By default, a 4-20 mA signal is expected for the CO2input and a 0-5 VDC or 1-5
VDC signal is expected for the static pressure input. However, this can be modified using the internal
jumpers (see p.9). Please refer to Figure 9 for correct wiring.
Figure 9: Connecting the CO2 and pressure sensors

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OUTPUTS
The M2000 Heatpump controller contains 8 customizable outputs; five triac ON/OFF outputs (24VAC)
and three analog outputs (0-10VDC). Output configuration is performed via the ProLon Focus software.
An integrated resettable fuse protects each of the outputs of the M2000 against current surges and short
circuits. This protection will cut the current to the output as soon as an overload condition is detected.
The fuse is a round, yellow-coloured PTC that will change to orange and heat up on an overload
condition. Once power has been removed from the M2000, the fuse will cool down and automatically
reset. Fix the faulty wiring and you will be able to activate the output once again.
Output Specifications
Output Type Action Application
DO 1
Triac s ource 24VAC
Max Current: 300 mA
On-or-Off Fan (G)
DO 2
Triac s ource 24VA C
Max Current: 300 mA
On-or-Off Compressor (1st Stage) (Y1)
DO 3
Triac s ource 24VA C
Max Current: 300 mA
On-or-Off Compressor (2nd Stage) (Y2)
DO 4
Triac s ource 24VA C
Max Current: 300 mA
On-or-Off Reversing Valve
DO 5
Triac s ource 24VA C
Max Current: 300 mA
On-or-Off Auxiliary Heat
AO 1
Configurable Analog Output:
- 0 to 10 VDC
- 2 to 10 VDC
- 0 to 5 VDC
Max Current: 40 mA
Modulating proportional
OR
Pulsed
OR
On-or-Off
Preheating only
OR
Preheat + Heating
OR
Heating
AO 2
Configurable Analog Output:
- 0 to 10 VDC
- 2 to 10 VDC
Max Current: 40 mA
Modulating
proportional
Economizer
AO 3
Configurable Analog Output:
- 0 to 10 VDC
- 2 to 10 VDC
Max Current: 40 mA
Modulating
proportional
Bypass
OR
Variable Frequency Drive

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Typical Connection of Triac Outputs 1 to 5
On the M2000 Heatpump controller, all triac outputs produce a 24 VAC live voltage when activated.
Note that all output voltages originate from a single voltage supply: the equipment’s transformer.
Consequentially, only the live side of the output connections are usually needed; these are on the top
row (see figure 8). The bottom row is the common (GND).
2 1
4 35
(W1)
(Y2)
Equipment terminal board
Figure 10: Connection of digital outputs 3 and 4
Typical Connection of Analog Outputs 1 to 3
For all analog outputs, the common is found on the bottom row terminal blocks, and the active signals
are found on the top row terminal blocks (see Figure 9). Analog outputs 1 can be configured to modulate
a 0-10 VDC load, to pulse a 0 or 10 VDC triac relay or to control a 10 VDC On/Off relay. Analog outputs
2 and 3 can only modulate a DC load (0-10 VDC or 2-10 VDC).
2 1
3
(+)
(-)
External
Load
SSR
Figure 11: Connecting analog output 1 (external power)

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POWER SOURCE & NETWORK
Power Source
The M2000 controller is powered by the HVAC equipment’s 24 VAC Class 2 power supply by
connecting the common (’’C’’ wire) to the "COM" terminal block and the live (‘’R’’ wire) to the "24 VAC"
terminal block (see Figure 12). The common for all inputs and outputs is the same as the power source’s
common. All output power sources also originate from the HVAC equipment’s power source.
("R")
("C")
To"HVAC"equipment"terminal"
(Class"2)
24VAC
+
-
Figure 12: Connecting the 24VAC power source
Network Communication
The ProLon M2000 Heatpump controller is designed to work with the ProLon zone controllers (except
Heatpump Standalone controller). When they are networked, the M2000 and zone controllers all
communicate in real-time. The network connections are made using the network terminal block located
on the M2000 controller (see Figure 13).
Towards
network
+
-
(A)
(B)
Figure 13: Connecting to the network

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Technical Specifications
Supply: 24 VAC ±10%, 50/60 Hz, Class 2
Power: 5 VA (consumption), 40 VA (Input)
Inputs: 9 configurable analog inputs (thermistor / dry contact / 4-20mA / 0-5 VDC)
Digital Outputs: 5 triac outputs, 10-30 VAC source, 300 mA max (resettable fuse)
Analog Outputs: 3 x 0-10 VDC outputs, 40 mA max
Indication lights (LED): State of each output / Communication / Power / State of microprocessor
Microprocessor: PIC18F6722, 8 bits, 40 MHz, 128KB FLASH memory
Communication: Modbus RTU (RS485) up to 127 nodes
Baud Rates: 9600, 19200, 38400, 57600, 76800, 115200
Wiring: Removable screw-type terminal blocks (max 16 AWG) and RJ45 modular jacks
Dimensions: 137 mm x 112 mm ( 5.39" x 4.41" )
Environment: 0-50 ºC (32-122 ºF) Non-Condensing
The performance specifications are nominal and conform to acceptable industry standards. ProLon Inc. will not be liable for
damages resulting from misapplication or misuse of its products.

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Compliance
•cULus Listed; UL 916 Energy Management Equipment, File E364757, Vol.1
•CAN/CSA-C22.2 No. 2015-12, Signal Equipment
•FCC Compliant to CFR47, Part 15, Subpart B, Class B
•Industry Canada (IC) Compliant to ICES-003, Issue 5: CAN ICES-3 (B)/NMB-3(B)
•RoHS Directive (2002/95/EC)
FCC User Information
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not
cause harmful interference, and (2) this device must accept any interference received, including interference that may cause
undesired operation.
Caution: Any changes or modifications not approved by ProLon can void the user’s authority to operate the equipment.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the
FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the
following measures:
-Reorient or relocate the receiving antenna.
-Increase the separation between the equipment and receiver.
-Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
-Consult the dealer or an experienced radio/TV technician for help.
Industry Canada
This Class (B) digital apparatus meets all the requirements of the Canadian Interference-Causing Equipment regulations.
Cet appareil numérique de la Classe (B) respecte toutes les exigences du Réglement sur le matériel brouilleur du Canada.