Greystone Energy Systems PMRMC Series User manual

Page 1
INTRODUCTION
The Particulate Matter Transmitter uses an optical sensor based on
laser scattering principles and features innovative contamination-
resistance technology to perform highly accurate and reliable PM
measurements. With a continuous-operation lifetime of more than 8
years, the sensor will provide long-term reliability and high resolution
particle size binning for the detection of environmental dust and
other particles.
The sensor is housed within an attractive, low-prole enclosure to
monitor ambient PM levels for room applications. The sensor achieves
excellent performance characteristics, including high accuracy and
low power consumption to ensure stable long term operation. The
PMRMC features both 4-20 mA and voltage outputs (0-5 / 0-10Vdc) for simple integration into any building
automation system to assure good indoor air quality. The device is also available with an RS-485 MS/TP
network connection including either Modbus or BACnet® protocol.
BEFORE INSTALLATION
Read these installation instructions carefully before commissioning the PM Sensor. Failure to follow these
instructions may result in product damage. Do not use in an explosive or hazardous environment, with
combustible or ammable gases, as safety or emergency stop devices or in any other application where
failure of the product could result in personal injury. Use electrostatic discharge precautions during
installation and do not exceed the device ratings.
MOUNTING
The particulate matter transmitter mounts directly on a wall or onto an electrical wall box and should be
mounted to a wall box ve feet from the oor. Do not mount the sensor near doors, opening windows,
supply air diusers, or other known air disturbances. Avoid areas where the sensor is exposed to vibrations
or rapid temperature changes.
The cover is hooked to the base at the top edge and must be removed from the bottom edge rst. Use
a small Phillips screwdriver to loosen the security screw as shown in Figure 1. (Complete removal of the
screw is not required). Use a screw driver to carefully pry each bottom corner if necessary tip the cover
away from the base as shown in Figure 2 and sit it aside.
The PCB must be removed from the base to access the mounting
holes. Follow usual anti-static procedures when handling the
PCB. The PCB is removed by pressing the enclosure base to
unsnap the latch near the bottom edge, then the PCB can be
lifted out of the base as shown in Figure 3.
Set the PCB aside until the base is mounted on the wall. For
added protection, place the PCB in the supplied anti-static bag.
Mount the base by screwing to an electrical box or directly to
the wall as shown in Figure 4. The mounting hole locations are
shown in the Dimension drawings. After the base is mounted
Figure 1
Figure 2 Figure 3
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Room Particulate Matter
Transmitter
PMRMC Series - Installation Instructions

Page 2
WIRING
The particulate matter sensor has standard screw block connectors and easy wire access to facilitate wiring.
It is recommended that shielded twisted pair wiring at least 22 AWG be used for all connections and that
the device wires not be run in the same conduit with wiring used to supply inductive loads such as motors.
Disconnect the power supply before making any connections to prevent electrical shock or equipment
damage. Make all connections in accordance with national and local electrical codes.
The device power (24 Vac/dc) is connected to the terminal marked PWR (POWER). This terminal is used for
the positive dc voltage or the hot side of the ac voltage. The device is reverse voltage protected and as
such will not operate if connected backwards.
The common of the power supply is connected to the terminal marked COM (COMMON). Note that this
device has a half-wave type power supply which means the power supply common is the same as the output
signal common. Therefore, several devices may be connected to
one power supply and the output signals all share the same signal
common. Use caution when grounding the secondary of an ac
transformer or when wiring multiple devices to ensure that the
circuit ground point is the same on all devices and the controller.
In general, the transformer should not be connected to earth
ground when using devices with an RS-485 network connection.
The analog output signal is available on the OUT (OUTPUT)
terminal. This signal is jumper selectable for either voltage or
4-20 mA output signal type. See Figure 5. The voltage output
signal defaults to 0-5 Vdc but may be changed to 0-10 Vdc via
the menu. These options are clearly indicated on the device
PCB. The analog output signal is typically connected directly to
the Building Automation System (B.A.S.) and used as a control
parameter or for logging purposes. Check the controller Analog
Input type to determine the correct connection and signal type
before applying power. The device generates the analog output
signal (sourcing) and must not be connected to a powered input
or device damage may occur.
For voltage type output signal the device has a minimum load
that it is able to drive, similarly for current type output signal the
device has a maximum load that it is able to drive with a particular
power supply voltage. Observe and follow these ratings in the
Specication section or inaccurate reading may result. The 4-20
mA output signal can easily be converted to a 1-5 Vdc signal
for controllers accepting this type of input. Simply insert a 250
ohm (0.1% is best) resistor between the “+” and “-” inputs of the
controller. This will convert the 4-20 mA signal to the desired 1-5
Vdc. See Figure 6.
using the appropriate holes, remove the PCB from the anti-static bag and feed the wires through the
center hole of the PCB. Place the top of the PCB into the latches on the top of the backplate and gently
snap the bottom edge of the PCB into place as shown in Figure 4.
Make wire connections as per the Wiring Illustrations on Page 2 and install decorative cover by placing the
top of the cover into the cover holder on the top of the backplate and snapping the bottom into place as
shown in Figure 4. Tighten security screw with a screwdriver.
+ 24 Vdc/24 Vac (HOT)
COMMON
Analog Input
PWR
COM
OUT
Controller
Figure 4
Figure 6
Figure 5
Cover PCB Backplate
4-20 mA
4-20 mA
VOLT VOLT
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Page 3
If the device includes the optional network connection, use
twisted shielded pair to connect to the terminals marked
A-, B+ and SHLD (SHIELD). The positive wire connects to B+,
the negative to A- and the cable shield must be connected
to the SHLD terminal on each device. The shield wire should
be connected to earth ground at one end of the network
only. See Figure 7. If the device is installed at either end of
an RS-485 network, an end-of-line (EOL) termination resistor
(121 ohms) should be installed in parallel with the A- and B+
terminals.This device includes a network termination resistor
and jumper that can be used to connect the EOL resistor on
the PCB. Simply move the jumper to the EOL position and no
external resistor is required. See Figure 8.
A network segment is a single shielded wire loop run between
several devices (nodes) in a daisy chain conguration. The
total segment length should be less than 1220 meters (4000
feet) and the maximum number of nodes on one segment
length is 64. Nodes are any device connected to the loop and
include controllers but do not include the EOL terminators.
To install more than 64 devices, or to increase network
length, repeaters will be required for proper communication.
The maximum daisy chain length (segment) depends on transmission speed (baud rate), wire size and
number of nodes. If communication is slow or unreliable, it may be necessary to wire two daisy chains to
the controller with a repeater for each segment.
An optional signal is the alarm relay output available on the NO (NORMALLY OPEN), NC (NORMALLY
CLOSED ) and R.COM (RELAY COMMON) terminals. The R.COM terminal is not connected to the power
supply COM terminal, the relay output is completely isolated. The relay contacts may be connected to a
controller Digital Input (DI) for status monitoring or used to directly control an alarm or ventilation fan. Do
not exceed the device contact ratings. In some cases a separate control relay may be used between the
particulate matter sensor relay and a large fan for example. See Figure 9.
Figure 7
Set EOL Jumper
Building Controller
Device 01 Device 02 Device 03
Connect Shield One End Only
PWR
COM
PWR
COM
PWR
COM
SHLD
B+
A-
SHLD
B+
A-
SHLD
B+
A-
BACnet® Master
24 Vac / dc
Common
Shield
B+
A-
Building Controller
Device 01 Device 02 Device 03
Connect Shield One End Only
PWR
COM
PWR
COM
PWR
COM
SHLD
B+
A-
SHLD
B+
A-
SHLD
B+
A-
BACnet® Master
24 Vac / dc
Common
Shield
B+
A-
External 24 Vdc Power
Supply or 24 Vac
Transformer
Figure 8
Figure 9
EOL
EOL EOL
OFFON
Digital Input
Digital Input
Digital Input
NO
R. COM
NC
Controller
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Page 4
OPERATION  STARTUP
After applying power to the device, it will enter the start-up mode and the LCD will indicate the software
version number, the PM range, the PM alarm setpoint (if applicable) and the analog output type for two
seconds each.
If the network option is installed, then the start-up sequence will also show the network protocol, the baud
rate and the device address. Then the device will start normal operation and display the PM concentration
value.
OPERATION  NORMAL
During normal mode the device reads the PM sensor and calculates the Air Quality Index based on a 24
hour time average. The real time PM concentration value is displayed on the LCD and set as the output
value for the analog output. The output value is updated once per second. The LCD may be congured via
the menu to display either the PM value or the AQI. If the optional tri-color LED is installed, it will change
color to indicate Good (Green), Moderate (Yellow) or Poor (Red) air quality.
On start-up when the rst readings are obtained, the Air Quality reading for the device averages the
concentration level as necessary until the required time base setting is reached. For example, if only 10
readings are available then the output value is calculated as the average of those 10 readings. The next
output value will be an average of 11 readings. This short-averaging will continue until the unit has been
running for 24 hours. Once 24 hours is reached then the AQI value will always be the average of readings
over the past 24 hours.
The device also monitors the keypad and takes appropriate menu actions for setup. The network version of
the product allows for conguration of settings via BACnet® or Modbus protocol and the BACnet® objects
or Modbus registers are updated with the appropriate values and alarm conditions are monitored.
OPERATION  ALARM
All models except for the analog output only without relay will have a PM setpoint alarm. The alarm will
control the optional relay or network variables as applicable to the model.The PM alarm setpoint, hysteresis
and time delay may be congured via the menu or network. The details of each setting and operation is
explained in the Setup Menu section.
OPERATION  SETUP MENU
The Setup Menu has several items as shown below. To enter the menu, press and release the <MENU> key
while in normal operation. This will enter the Setup Menu step 1, pressing the <MENU> key a second time
advances to step 2. Each press of the <MENU> key saves the selection and advances the menu item. The
<ROLL> key is used to make changes to program variables by scrolling through the available options. If
the Setup Menu is not active for 5 minutes (no key press), then the menu will exit and the device returns
to normal operation.
Network
Modbus
BaudRate
9600
Address
3
100
ug/m3
Version
1.00
PM Range
PM1.0
PM Alarm
150ug/m3
Output
4-20 mA
PM Range
PM10
The default PM Range is PM10. Use <ROLL> to change the range as required to
either PM1.0, PM2.5, PM4.0, or PM10.
Output
0-5 Vdc
Use <ROLL> to set the voltage output signal type to 0-5 or 0-10 Vdc. The factory
default is 0-5 Vdc.
<MENU> Press to advance to next menu item
<MENU> Press to advance to next menu item
<MENU> Press and hold to enter the setup menu. Once in menu release <MENU>.
1. PARTICULATE MATTER RANGE
2. VOLTAGE OUTPUT SIGNAL
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Page 5
Scale
1000 ug
The default analog output scale is 0-1000 ug/m3. The maximum value can be
changed from 500 to 1000 (resolution 100) using <ROLL> if required. For example,
the output can be 4-20 mA = 0-700 ug/m3.
<MENU> Press to advance to next menu item
4. ANALOG OUTPUT SCALE
Backlite
Auto
The backlight operation defaults to Auto operation. It can be set to O or On using
<ROLL>. Auto means the LCD backlight only lights when a menu is accessed, o
means it never lights and on means it is always on.
<MENU> Press to advance to next menu item
6. BACKLIGHT
Display
ug/m3
Use <ROLL> to congure the display information as Mass Concentration in ug/m3
or as an Air Quality Index (0-500 AQI / GOOD, MODERATE, POOR). The display will
change from µg/m3to AQI.
<MENU> Press to advance to next menu item
5. DISPLAY INFORMATION
Output
Direct
The analog output defaults to Direct (4-20 mA, 0-5 Vdc or 0-10 Vdc). Use <ROLL> to
change it to Reverse (20-4 mA, 5-0 Vdc or 10-0 Vdc) if required.
<MENU> Press to advance to next menu item
3. ANALOG OUTPUT
<MENU> Press to advance to next menu item
Only if Relay OR Network Option installed
PM Alarm
150 ug
Alrm Hys
20 ug
Alrm Dly
0 min
PM Alarm
Test O
Setpoint for PM alarm and relay (if installed) activation. Default
setpoint for alarm activation is 150 ug/m3. Use <ROLL> to adjust
from 50-900 ug/m3. Resolution is 10 ug/m3.
The default PM alarm hysteresis is 20 ug/m3. Use <ROLL> to
change to 10, 15, 20, 25, 30, 35 or 40 ug/m3. If the PM Alarm
setpoint = 150 and hysteresis = 20, then the alarm will be set if
the PM exceeds 150 and will reset when it falls below 130.
The default PM alarm delay is 0 minutes. Use <ROLL> to change
from 0 to 10 minutes to prevent false alarms. Resolution is 1
minute.
The default PM alarm test is O. Use <ROLL> to toggle it O
or On. When set to On, an alarm condition is forced for testing
purposes. If a relay is installed it will also be activated. The alarm
condition will be reset to O.
7. SETPOINT
ALARM
8. ALARM
HYSTERESIS
9. ALARM
DELAY
10. PM ALARM
<MENU> Press to advance to next menu item
<MENU> Press to advance to next menu item
<MENU> Press to advance to next menu item
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Page 6
ModBus
Stop 1
Use <ROLL> to toggle the stop bits between 1 and 2. The
default Modbus stop bits is 1.
14. STOP BITS
<MENU> Press to advance to next menu item
Only if Modbus Option installed
ModBus
CRC A001
ModBus
CRC A001
Use <ROLL> to set the CRC value to A001 (CRC-16 reverse),
1021 (CITT), 8005 (CRC-16) or 8408 (CITT reverse). The default
CRC polynomial is 0xA001.
Use <ROLL> to change the value from MIN (minimum) to 50,
100, 150, 200, 250, 300 or 350ms. The factory default slave
response delay is minimum (minimum delay means just
more than 3.5 character time delays, 4ms for 9600 baud rate,
for example).
15. CRC VALUE
16. SLAVE
RESPONSE
<MENU> Press to advance to next menu item
<MENU> Exits the Setup Menu and returns to normal mode.
ModBus
Parity N
Use <ROLL> to select a parity value of N (none), O (odd) or E
(even). The factory default Modbus parity bit is N (none).
13. PARITY VALUE
<MENU> Press to advance to next menu item
Only if Network Option installed
BaudRate
9600
Address
3
The default network baud rate is 9600. Use <ROLL> to select
9600, 19200, 38400, 57600, 76800 or 115200 as required.
The default network address is 3 for BACnet® and 1 for Modbus.
Use <ROLL> to select 0-127 for a BACnet® device or 1-255 for a
Modbus device.
11. BAUD RATE
12. ADDRESS
<MENU> Press to advance to next menu item
<MENU> Press to advance to next menu item
OPERATION  TESTING/COMMISSIONING OPTIONAL
To perform testing or commissioning the unit should be congured to display PM reading since AQI
reading requires operation over 24-hour period. To verify sensor is reading properly a Greystone CO BUMP
KIT or equivalent can be used to generate particulates.
To prepare for testing open CO BUMP KIT, follow instructions included with kit to generate smoke from
wick. The CO Adapter is not required for testing the PM sensor.
Hold wick close to inlet of sensor (bottom of cover).
Sensor PM reading should increase.
This will verify sensor is reading higher PM levels and is operational. If sensor readings do not increase
with smoke then sensor is faulty.
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Page 7
SPECIFICATIONS
PM Sensor
Sensor............................................Laser scatter method
Particle Size..................................PM1.0, PM2.5, PM4.0, or PM10 (selectable)
Mass Concentration..................0 to 1000 ug/m3
Resolution....................................1 ug/m3
Accuracy .......................................±10 ug/m3(0 to 100 ug/m3), ±10% (100 to 1000 ug/m3)
Response Time ...........................1 second
Sensor Lifetime ..........................>8 years
Analog Model
Consumption..............................75 mA max @ 24 Vdc, 100 mA max @ 24 Vac
Output Signals............................4-20 mA (sourcing) or 0-5 Vdc / 0-10 Vdc (selectable)
Output Drive Capability..........Current: 550Ω max
Voltage: 5,000Ω min
Output Scale ...............................0 to 1000 ug/m3(menu selectable)
BACnet® Model
Consumption..............................50 mA max @ 24 Vdc, 80 mA max @ 24 Vac
Interface........................................MS/TP, 2-wire RS-485
Baud Rate .....................................9600, 19200, 38400, 57600, 76800 or 115200 (menu selectable)
Address Range............................0 to 127 (menu selectable)
Modbus Model
Consumption..............................50 mA max @ 24 Vdc, 80 mA max @ 24 Vac
Interface........................................MS/TP, 2-wire RS-485, RTC
Baud Rate .....................................9600, 19200, 38400, 57600, 76800 or 115200 (menu selectable)
Address Range............................1 to 255 (menu selectable)
Tri-Color LED (optional)
Good ..............................................Green (0 to 50 ug/m3)
Moderate......................................Yellow (51 to 150 ug/m3)
Poor ................................................Red (151 to 1000 ug/m3
PM Alarm Relay (optional)
Contact Ratings..........................Form C (N.O. + N.C.), 2A @ 140 Vac, 2A @ 30 Vdc
Relay Setpoint + Hysteresis ...Programmable via menu
Relay Time Delay........................Programmable via menu
General
LCD Size ........................................35mm W x 15mm H (1.4" x 0.6") alpha-numeric 2 line x 8 characters
LCD Backlight..............................Enable or disable via menu
Display Values.............................0 to 500 Air Quality Index or 0 to 1000 ug/m3
Power Supply..............................24 Vac/dc ±20% (non-isolated half-wave rectied)
Protection Circuitry...................Reverse voltage protected, over-voltage protected
Operating Conditions ..............0 to 50°C (32 to 122°F), 20 to 80 %RH non-condensing
Storage Conditions...................-30 to 60°C (-22 to 140°F)
Wiring Connections..................Screw terminal block (14 to 22 AWG)
Enclosure Dimensions .............84mm W x 117mm H x 29mm D (3.3" x 4.6" x 1.15")
Enclosure Material.....................White ABS, IP30 (NEMA 1)
Weight...........................................5.3 oz (150 gm)
Country of Origin.......................Canada
Accessories
PMFRSM ..........................................Replaceable sensor module and wire harness
84 mm
3.3“
119 mm
4.7“
29 mm
1.15 “
82.6 mm
3.25 “
58 mm
2.3 “
DIMENSIONS
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PRINTED IN CANADA
Page 8
NETWORK SETUP GUIDE
The network setup guide describes the implementation of the BACnet® or Modbus protocol. It is
intended to assist control system programmers who may need to add support to their systems to
communicate with the device.
BACnet® and Modbus setup guide downloads are available online.
BACnet® PROTOCOL
https://downloads.greystoneenergy.com/SG/SG-PMXXXBAC.pdf
MODBUS PROTOCOL
https://downloads.greystoneenergy.com/SG/SG-PMXXXMOD.pdf
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