Prolon C1050 Series Installation instructions

HARDWARE GUIDE
Humidifier Controller C1050 Series
Specifications and Operational Guide
REV. 7.3.0
PL-HRDW-HU-C1050-C/F-EN
www.proloncontrols.com |[e-mail]
17 510, rue Charles, Suite 100, Mirabel, QC, J7J 1X9

2
REV. 7.3.0 / PL-HRDW-HU-C1050-C/F-EN
Table of Contents
General Information ....................................................................................................................................................... 4
PL-C1050 Humidity Controller........................................................................................................................................................................4
Description............................................................................................................................................................................................................4
General Behaviour..............................................................................................................................................................................................4
Operating Sequence ....................................................................................................................................................... 5
Humidication.....................................................................................................................................................................................................5
Dehumidication................................................................................................................................................................................................5
Components .................................................................................................................................................................... 6
Component Identication...............................................................................................................................................................................6
LEDs .........................................................................................................................................................................................................................7
Address Conguration for Networking......................................................................................................................................................7
Input and Output Identication....................................................................................................................................................................8
Inputs ............................................................................................................................................................................... 9
Analog Input.........................................................................................................................................................................................................9
Outside Temperature Sensor .........................................................................................................................................................................9
Relative Humidity Sensors ........................................................................................................................................................................... 10
Proof of Fan........................................................................................................................................................................................................ 10
Outputs ...........................................................................................................................................................................11
Output Specications .....................................................................................................................................................................................11
Conguration of Outputs 3 and 4 ..............................................................................................................................................................11
Typical Connection of the Triac Outputs 3 and 4..................................................................................................................................12
Typical Connection of the Analog Output ..............................................................................................................................................13
Power Source / Network ............................................................................................................................................... 14
Power Source .....................................................................................................................................................................................................14
Network Communication..............................................................................................................................................................................14
Technical Specications ............................................................................................................................................... 15
Compliance .................................................................................................................................................................... 16
FCC User Information ..................................................................................................................................................................................... 16
Industry Canada .............................................................................................................................................................................................. 16
Overall Dimensions........................................................................................................................................................17

3
REV. 7.3.0 / PL-HRDW-HU-C1050-C/F-EN
Table of Figures
Figure 1 - Component Identication..................................................................................................................................................................6
Figure 2 - LEDs Identication................................................................................................................................................................................7
Figure 3 - Addressing Dipswitches......................................................................................................................................................................7
Figure 4 - Input and Output Identication.......................................................................................................................................................8
Figure 5 - Analog input ...........................................................................................................................................................................................9
Figure 6 - Connecting the Outside Air Sensor ................................................................................................................................................9
Figure 7 - Connecting the Humidity Sensors............................................................................................................................................... 10
Figure 8 - Connecting the Proof of Fan .......................................................................................................................................................... 10
Figure 9 - Output in SOURCE mode..................................................................................................................................................................11
Figure 10 - Output in SINK mode.......................................................................................................................................................................12
Figure 11 - Connection of Active Outputs 3 and 4......................................................................................................................................12
Figure 12 - Connection of Passive Outputs 3 and 4....................................................................................................................................12
Figure 13 - Connecting the Analog Output (Controller Powered) ........................................................................................................13
Figure 14 - Connecting the Analog Output (External Power) .................................................................................................................13
Figure 15 - Connecting the 24VAC Power Source........................................................................................................................................14
Figure 16 - Connecting to the Network...........................................................................................................................................................14
Figure 17 - C1050 Size Diagram..........................................................................................................................................................................17

4
REV. 7.3.0 / PL-HRDW-HU-C1050-C/F-EN
Description
The PL-C1050 humidity controller is a microprocessor-based controller designed to regulate the relative humidity level in
a room or return duct. Both humidication and dehumidication sequences are available. It features a variety of control
strategies, including outdoor temperature reset, unoccupied mode setpoint osets, safety limits and more.
General Behaviour
Although fully congurable, the Prolon C1050 humidity controller monitors dedicated inputs and uses pre-established
control sequences to drive dedicated outputs to control standard humidication or dehumidication equipment. These
sequences can be fully optimized to obtain the best results for each type of system. The various conguration options al-
low the user to modify the outside temperature reset scale, the dehumidication control points, the high humidity limits
in the supply and more. A sequence to request fan reactivation in night mode is also available. All these parameters can
be accessed and modied by using the Prolon Focus software.
General Information
PL-C1050 Humidity Controller

5
REV. 7.3.0 / PL-HRDW-HU-C1050-C/F-EN
Operating Sequence
Humidification
The C1050 humidity controller obtains an outside air temperature reading from either a connected sensor or transmitted
from a network master. The current outside temperature determines the relative humidity setpoint to maintain in the
zone or return using a congurable reset scale. Proof of fan operation is required to enable humidication. The C1050 has
a dedicated input for the proof of fan, but it can also be transmitted to the C1050 from a network master.
The C1050 has two outputs available for humidication: a digital ON or OFF (dierential) triac output and an analog
(0-10VDC) modulating or pulsing output, which uses a proportional and integral control loop to maintain the setpoint.
A humidity sensor can optionally be installed in the supply duct, which then enables high humidity limit control. Humidi-
cation also stops when the outside temperature becomes too warm.
In unoccupied mode, the C1050 can request that the network master restarts the fan if the humidity gets too low.
Dehumidification
The C1050 request dehumidication when the humidity level goes beyond its user-congurable setpoint. Proof of fan
operation is required to enable dehumidication. The C1050 has a dedicated input for the proof of fan, but it can also be
transmitted to the C1050 from a network master.
The C1050 has two dierent means of requesting dehumidication. The rst is a digital ON or OFF (dierential) triac out-
put which is activated based on a request for dehumidication. The second is a by sending a network based signal to any
Prolon Rooftop controller. The Prolon Rooftop controller will then take the necessary steps to begin dehumidication.
A humidity sensor can optionally be installed in the supply duct, which then enables high humidity limit control. Humidi-
cation also stops when the outside temperature becomes too warm.
In unoccupied mode, the C1050 can request that the network master restarts the fan if the humidity gets too high.

6
REV. 7.3.0 / PL-HRDW-HU-C1050-C/F-EN
Components
Legend:
A-Analog Input Signal Mode Jumpers
B-Addressing dipswitch
C-Jumpers for terminating and bias resistors for the INT port (see I)
D-Jumpers for terminating and bias resistors for the NET port (see K)
E-SOURCE/SINK dipswitch for Output 4
F-SOURCE/SINK dipswitch for Output 3
G-SOURCE/SINK dipswitch for Output 2
H-SOURCE/SINK dipswitch for Output 1
I-INT port for RS485 communication (terminal block)
J-Alternate terminal blocks for 24 VAC (provides power to an optional digital sensor)
K-NET port for RS485 communication (terminal block)
L-Inputs (4 total)
M-Terminal Blocks for Outputs 1 to 5
N-Terminal Blocks for 24 VAC
INT
BIAS THERM
DO1
DO2
DO3
DO4
AO
DO124V DO2 DO3 DO4 AO HBEAT STAT
NETREC NETSND INTREC INTSND
UI1
UI2
COM
UI3
DI
-
24VAC
COM
INT
+
B
NET
A
RS485
NET
RS485
INT
NET
BIAS THERM
UI3
UI2
UI1
Figure 1 - Component Identification
Component Identification

7
REV. 7.3.0 / PL-HRDW-HU-C1050-C/F-EN
LEDs
Address Configuration for Networking
The C1050 has various LEDs which are linked to dierent functions and outputs of the controller. Each LED is individually
identied to help the user make a quick visual diagnostic of the controller’s activity and status.
A unique address on each controller must be congured by setting the rst 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, 64 respectively). The
value of each switch that is in the ON position is added together to form the numerical address of the controller.
The example on Figure 3 shows the switches 1, 2 and 4 on the ON position. So the corresponding values are 1, 2 and 8,
giving an address sum of 11. (1+2+8=11)
The Prolon network allows a maximum of 127 addresses, therefore 127 controllers.
Figure 3 - Addressing Dipswitches
DO124V DO2 DO3 DO4 AO HBEAT STAT
NETREC NETSND INTREC INTSND
Blue light: Internal 24VDC power source OK
Status light for analog output 5 (Humidication)
Status light for triac output 4 (Humidication)
Status light for triac output 3 (Humidication)
Red light: Sending to INT port
Figure 2 - LEDs Identification
Green light: Reception from INT port
Blue pulsing, indicates that
the CPU is online
Red light: Sending to network bus
Green light: Reception from network bus

8
REV. 7.3.0 / PL-HRDW-HU-C1050-C/F-EN
Input and Output Identification
Figure 4 - Input and Output Identification
All the inputs and outputs of the C1050 use pluggable screw type terminal blocks with elevator style clamping, which
make connections easier and more secure.
The C1050 Humidity Controller has 2 separate communication ports oering the same functionality on each. Both act
as ports for incoming Modbus communications from other Prolon devices or interfaces, such as a Network Controller or
remote computer with Prolon Focus software.
DO1
DO2
DO3
DO4
AO
DO124V DO2 DO3 DO4 AO HBEAT STAT
NETREC NETSND INTREC INTSND
UI1
UI2
COM
UI3
DI
-
24VAC
COM
INT
+
B
NET
A
RS485
NET
RS485
INT
INT Port: Incoming RS485 network communication (Modbus)
NET Port: Incoming RS485 network communication (Modbus)
External dry contact for proof of fan
Supply humidity sensor (0-5 / 0-10 VDC)
Common for all the inputs
Room / Return humidity sensor (0-5 / 0-10 VDC)
Outside temperature sensor (10K thermistor)
Output 5 - Humidifier (analog 0-10 / 2-10 VDC)
Output 4 - Humidifier (digital - ON/OFF)
Output 3 - Dehumidifier (digital - ON/OFF)
Power source of the controller (24VAC)

9
REV. 7.3.0 / PL-HRDW-HU-C1050-C/F-EN
Inputs
Outside Temperature Sensor
Figure 6 - Connecting the Outside Air Sensor
The C1050 Humidity controller has an analog input dedicated to monitoring outside air temperature and will integrate
this reading into its control sequence. The sensor used is a standard 10k type 3 thermistor. If the C1050 is connected to a
Prolon network, it can instead receive the outside temperature from another device on the network.
Analog Input
Figure 5 - Analog input
The C1050 series controllers are equipped with three general purpose analog inputs. These inputs can be congured to
receive signals of the following types:
• Thermistor (Ω) •0-5V
• 4 -20mA •0-10V
When a thermistor is used, the thermistor must be 10KΩ TYPE 3.
Each C1050 analog input is equipped with a fast-switching barrier diode to protect against surges and short circuits.
By default, the C1050-HU analog inputs are set up for thermistor mode. The input signal mode can be changed by setting
jumpers U1, U2 and U3, situated inside the casing, in the desired position:
JUMPERS
HBEAT STAT
NETREC NETSND INTREC INTSND
UI1
UI2
COM
UI3
DI
-
24VAC
COM
INT
+
B
NET
A
RS485
NET
RS485
INT
Outside air sensor

10
REV. 7.3.0 / PL-HRDW-HU-C1050-C/F-EN
Proof of Fan
Figure 8 - Connecting the Proof of Fan
The C1050 Humidity controller has an input dedicated for a proof of fan contact. To conrm that there is a proof of fan,
the contact must be closed. If the C1050 is connected to a network, the network master can transmit the proof of fan
information through the network instead. However, if no proof of fan signal is available, the dedicated input must be
short-circuited to ground (terminal #15).
Relative Humidity Sensors
Figure 7 - Connecting the Humidity Sensors
The C1050 Humidity controller has two inputs dedicated the relative humidity readings in the room (or return duct) and
the supply (optional). This information is then integrated into its control sequences. The sensors used must provide a
0-5VDC signal.
HBEAT STAT
NETREC NETSND INTREC INTSND
UI1
UI2
COM
UI3
DI
-
24VAC
COM
INT
+
B
NET
A
RS485
NET RS485
INT
Room / Return
humidity sensor
(0-5VDC signal)
Supply humidity
sensor
(0-5VDC signal)
HBEAT STAT
NETREC NETSND INTREC INTSND
UI1
UI2
COM
UI3
DI
-
24VAC
COM
INT
+
B
NET
A
RS485
NET
RS485
INT
Proof of fan

11
REV. 7.3.0 / PL-HRDW-HU-C1050-C/F-EN
Outputs
Output Specifications
Output Type Action Application
3Triac Source: 24VAC
MAx Current: 300 mA On-or-O Dehumidication in dierential mode
4Triac Source: 24VAC
MAx Current: 300 mA On-or-O Humidication in dierential mode
5
Congurable Analog Output:
- 0 to 10 VDC
- 2 to 10 VDC
Max Current: 40 mA
Modulating Proportional/
Pulsed
Humidication with
proportionnal and
integral action
The C1050 Humidity controller contains 3 congurable outputs. Two of the outputs are dedicated to humidication
(Output 4 and Output 5). Output 4 is an ON-OFF triac output and Output 5 is an analog 0-10VDC modulating or pulsing
output, which follows a proportional and integral algorithm (PI). This PI function is fully customizable via the Prolon
Focus software.
The remaining output (Output 3) is dedicated to dehumidication. Output 3 is an ON-OFF triac output.
An integrated resettable fuse protects each of the outputs of the C1050 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 round and yel-
low-colored which, upon a short circuit condition, will heat up and change to orange. When the faulty wiring or circuit is
xed, the fuse will automatically reset and allow current to ow through the output again.
Configuration of Outputs 3 and 4
The digital triac outputs are congurable (SOURCE/SINK) via a switch located on the board. Simply move the switch to
obtain either a SOURCE active output (1) or a SINK passive output (2).
1) Switch position to obtain a SOURCE active output:
Figure 9 - Output in SOURCE mode
Switch for
Output 4
24 VAC Output (ON/O)
Output 4 Common
DO3
DO4
AO
DO3 DO4 AO

12
REV. 7.3.0 / PL-HRDW-HU-C1050-C/F-EN
Typical Connection of the Triac Outputs 3 and 4
Figure 10 - Output in SINK mode
Figure 11 - Connection of Active Outputs 3 and 4
Two types of congurations are possible:
1) Active output (SOURCE). The C1050 is actively powering the load:
2) Switch position to obtain a SINK passive output:
2) Passive output (SINK). The C1050 opens and closes a contact to allow an external source to power the load:
Figure 12 - Connection of Passive Outputs 3 and 4
Switch for
Output 4
Isolated dry contact
(On/O)
DO3
DO4
AO
DO3 DO4 AO
External Load
DO3
DO4
AO
DO3 DO4 AO
External 24 V
External Load
24 N
DO3
DO4
AO
DO3 DO4 AO

13
REV. 7.3.0 / PL-HRDW-HU-C1050-C/F-EN
Two types of conguration are possible:
1) The C1050 powers the load and provides a control signal:
2) The C1050 only provides the control signal to the load, which is powered by an external source:
Figure 13 - Connecting the Analog Output (Controller Powered)
Figure 14 - Connecting the Analog Output (External Power)
Typical Connection of the Analog Output
Controlled
Load
24 VAC power
(From terminal block
#2 of the controller)
24v
0-10v
COM
DO3
DO4
AO
DO3 DO4 AO
Controlled
Load
External
24 VAC
source
N
24v
0-10v
COM
DO3
DO4
AO
DO3 DO4 AO

14
REV. 7.3.0 / PL-HRDW-HU-C1050-C/F-EN
Power Source / Network
Power Source
Network Communication
Figure 15 - Connecting the 24VAC Power Source
Figure 16 - Connecting to the Network
The Prolon C1050 controller is powered by a 24 VAC power source connected using the "COM" terminal and the "24 VAC"
terminal. The common for all inputs and outputs are the same as the power source’s common (exception: when an out-
put is set to passive, the common for this output will not correspond to the power source common). All output power
sources also originate from the controller’s power source.
The Prolon C1050 controller works autonomously or networked. When networked, it will communicate in real-time with
other controllers. The C1050 controller’s default communication protocol is Modbus RTU over RS485. The addressing is
done with the addressing dipswitch located on the C1050 card (see Figure 3). The network connections are made using
the NET terminal block located on the Prolon C1050 controller.
HBEAT STAT
NETREC NETSND INTREC INTSND
UI1
UI2
COM
UI3
DI
-
24VAC
COM
INT
+
B
NET
A
RS485
NET
RS485
INT
Tow a r d
network
NL
120VAC24VAC
DO1
DO124V

15
REV. 7.3.0 / PL-HRDW-HU-C1050-C/F-EN
Supply: 24 VAC ±10%, 50/60 Hz, Class 2
Consumption: 2 VA (Consumption), 32 VA (Input)
Inputs: • Outside air – thermistor 10K
• Return/room humidity – 0-5 VDC
• Supply humidity – 0-5 VDC
• Proof of fan – dry contact
Digital outputs: 2 triac outputs, 10-30 VAC source or sink, 300 mA max (resettable fuse)
Analog output: 1 output 0-10 VDC / 2-10 VDC, 40 mA max (resettable fuse)
Indication lights (LED): State of each output / Communication / Power / State of microprocessor
Microprocessor: PIC18F6722, 8 bits, 40 MHz, 128KB FLASH memory
Casing: Molded ABS, UL94-HB
Communication: Modbus RTU (RS485), up to 127 nodes
Baud rate: 9600, 19200, 38400, 57600, 76800, 115200
Connection: Removable screw-type terminal blocks (16 AWG max)
Dimensions: 6.5" x 5.3" (165mm x 135mm)
Weight: 0.85 lbs (0.4 kg)
Environment: -4 to 122 ºF (-20 to 50 ºC) Non-Condensing
Certication: UL916 Energy Management Equipment, CAN/CSA-C22.2, RoHS, FCC part 15: 2012 class B
The performance specications are nominal and conform to acceptable industry standards. Prolon Inc. will not be liable for
damages resulting from misapplication or misuse of its products.
Technical Specifications

16
REV. 7.3.0 / PL-HRDW-HU-C1050-C/F-EN
• 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 modications 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 resi-
dential 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 o 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 dierent 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.
Compliance

17
REV. 7.3.0 / PL-HRDW-HU-C1050-C/F-EN
DO1
DO2
DO3
DO4
AO
DO124V DO2 DO3 DO4 AO HBEAT STAT
NETREC NETSND INTREC INTSND
UI1
UI2
COM
UI3
DI
-
24VAC
COM
INT
+
B
NET
A
COM
COM
COM
COM
COM
REV. 7.3.0
PL-HRDW-HU-C1050-C/F-EN
5.3"
(135 mm)
6.5"
(165 mm)
2.2"
(55 mm)
Figure 17 - C1050 Size Diagram
Overall Dimensions
© Copyright 2021 Prolon. All rights reserved.
No part of this document may be photocopied or reproduced by any means, or translated to another language without prior written
consent of Prolon. All specications are nominal and may change as design improvements are introduced. Prolon shall not be liable for
damages resulting from misapplication or misuse of its products. All trademarks are the property of their respective owners.