Greentrol Automation GF-N1000 Series User manual

GF-N1000
Quick Installation Guide
Green-Flow BACnet/Modbus Network Output Measurement Station
Thermal Dispersion Airflow Measurement Technology
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3DUW1XPEHU
GreenTrol Automation • 156 Holly View Lane., Loris SC 29569 • Toll Free: 877.4GNTROL (446.8765) • Fax: [phone] • Internet: GreenTrol.com
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Installation Guide
GF-N1000 Series
BACnet/Modbus Network Output
Airflow/Temperature Measurement Station
Document: IG_GF-N1000-DI_R1A
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IG-GF-N1000-DI R1A

GreenFlow GF-N1000
INSTALLATION GUIDE –BACnet/MODBUS NETWORK OUTPUT THERMAL
DISPERSION AIRFLOW MEASURING DEVICE
2
GreenTrol Automation • 156 Holly View Lane., Loris SC 29569 • Toll Free: 877.4GNTROL (446.8765) • Fax: [phone] • Internet: GreenTrol.com
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LIST OF EFFECTIVE AND CHANGED PAGES
Insert latest changed pages (in bold text); remove and dispose of superseded pages.
Total number of pages in this manual is 1
12
.
Page No Revision * Description of Change Date
1 through 13 ………..R1A ………….Initial Document Release………………………………………………………………………………………………………………...7/1/2020
*R1A indicates an original page without change
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Table of Contents
1INTRODUCTION AND SCOPE................................................................................................................................................................................3
2GF-N1000 INSTALLATION....................................................................................................................................................................................3
3GF-N1000 PREPARATION FOR USE ....................................................................................................................................................................5
4GF-N1000 INTERCONNECTIONS .........................................................................................................................................................................5
4.1GF-N1000 24 VAC Power Connections .....................................................................................................................................................6
4.2S1 - GF-N1000 Configuration DIP Switch Settings ...................................................................................................................................6
4.3Setting the MAC Address ...........................................................................................................................................................................6
4.4Setting the Baud Rate................................................................................................................................................................................9
4.5J4 - GF-N1000 RS-485 Network Termination Selection...........................................................................................................................9
4.6Restoring Factory Default Settings............................................................................................................................................................9
5GF-N1000 BACnet CONFIGURATION................................................................................................................................................................ 10
5.1Changing BACnet Device Object Instance Number ............................................................................................................................... 10
5.1.1Matching BACnet Device Object Instance Number to MAC Address........................................................................................... 10
5.1.2Setting BACnet Device Object Instance Number to a value different than MAC Address.......................................................... 10
6GF-N1000 MODBUS CONFIGURATION............................................................................................................................................................. 10
7GF-N1000 INITIAL START UP / NORMAL OPERATION ..................................................................................................................................... 11
8GF-N1000 ADDITIONAL INFORMATION............................................................................................................................................................ 11
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List of Figures
Figure 1. GF-N1000 Installation Applications and Orientation ...................................................................................................................................4
Figure 2. GF-N1000 Installation Dimensions...............................................................................................................................................................5
Figure 3.GF-N1000 Circuit Board, Wiring and Configuration Switch Details..............................................................................................................7
Figure 4. Power and Signal Wiring Interconnections ...................................................................................................................................................8
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List of Tables
Table 1. GF-N1000 Baud Rate Selection .....................................................................................................................................................................9
Table 2. GF-N1000 BACnet Object Properties .......................................................................................................................................................... 12
Table 3. GF-N1000 Modbus Register Map ............................................................................................................................................................... 13
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GreenFlow GF-N1000
INSTALLATION GUIDE –BACnet/MODBUS NETWORK OUTPUT THERMAL
DISPERSION AIRFLOW MEASURING DEVICE
3
GreenTrol Automation • 156 Holly View Lane., Loris SC 29569 • Toll Free: 877.4GNTROL (446.8765) • Fax: [phone] • Internet: GreenTrol.com
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1INTRODUCTION AND SCOPE
This Quick Installation Guide provides basic installation information for the instrument installer. Information includes physical
instrument installation, power and output cable connections as well as initial setup of the instrument. Model GF-N1000 provides
a non-isolated RS-485 BACnet MS/TP or Modbus RTU output related to airflow and temperature.
Models covered in this document are include all GF-N1000 options as follows:
xAluminum or stainless-steel probe material
xProbe length (4 through 10, 12, 14, 16-inch lengths)
2GF-N1000 INSTALLATION
The GF-N1000 instruments are designed for use in small ducts and in VAV terminal box applications in an environment between
-20°F to 120°F (-28.9°C to 48.9°C) where it will not be exposed to rain or snow. The GF-N1000 airflow measurement station
sensor probes are designed for insertion mounting through one side of the duct or VAV box sidewall. Mount the instrument in an
accessible location to permit set up. Locate the instrument so that the customer provided power and network cables will reach
the instrument.
CAUTION
The installed location of the GF-N1000 is critical for proper performance. Refer to the
GteenTrol Minimum Placement Guidelines to determine the exact location
recommended for the instrument.
The installed accuracy of the GF-N1000 is ensured in applications where the maximum
inside duct dimension is 16 inches or less. Applications in larger duct sizes may
degrade accuracy. Consult factory for these applications.
Ensure that adequate clearance exists around the duct to permit insertion of the probe,
and to allow clearance for the instrument enclosure.
Insulation that interferes with probe mounting should be temporarily removed prior to
installation. Mounting requires a 0.875 inches (22.2 mm) hole on the insertion side of
the duct or VAV terminal box.
1.Determine where the GF-N1000 airflow measuring station is to be located as indicated on the engineer's plans.
2.Carefully open the GF-N1000 package and inspect for damage. If damage is noted, immediately file a claim with carrier.
3.Locate and mark the point on the duct or VAV box where the probe will be inserted, using the GteenTrol Minimum
Placement Guidelines. Figures 1 and 2 show GF-N1000 installation detail, probe orientation and dimensions.
4.Using a 0.875 inches (22.2 mm) hole saw, drill the insertion side hole where marked.
5.Place the probe through the mounting hole, making sure that the gasket is seated firmly against the integral mounting
bracket. Ensure that the edge of the GF-N1000 mounting bracket is parallel to the edge of the duct or VAV terminal box,
and that the airflow arrow printed on it is oriented in the direction of actual airflow. Ensure that the gasket is firmly
seated against the bracket, and then fasten the mounting bracket at the four mounting holes using appropriate sheet
metal screws.
6.Refer to the following sections of this document for instrument wiring, set up and operation.
IG_GF-N1000-DI
_R1A


GreenFlow GF-N1000
INSTALLATION GUIDE –BACnet/MODBUS NETWORK OUTPUT THERMAL
DISPERSION AIRFLOW MEASURING DEVICE
4
GreenTrol Automation • 156 Holly View Lane., Loris SC 29569 • Toll Free: 877.4GNTROL (446.8765) • Fax: [phone] • Internet: GreenTrol.com
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Figure 1. GF-N1000 Installation Applications and Orientation
IG_GF-N1000-DI
_R1A

GreenFlow GF-N1000
INSTALLATION GUIDE –BACnet/MODBUS NETWORK OUTPUT THERMAL
DISPERSION AIRFLOW MEASURING DEVICE
5
GreenTrol Automation • 156 Holly View Lane., Loris SC 29569 • Toll Free: 877.4GNTROL (446.8765) • Fax: [phone] • Internet: GreenTrol.com

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Figure 2. GF-N1000 Installation Dimensions
3GF-N1000 PREPARATION FOR USE
The GF-N1000 provides a non-isolated RS-485 BACnet MS/TP or Modbus RTU output for airflow and temperature measurement.
Preparation for use consists of connecting 24VAC input power, connecting RS-485 network signal wires from the GF-N1000 to
the BAS interface, and if required, setting network options through CONFIG switch S1.
4GF-N1000 INTERCONNECTIONS
dŚĞ'&ͲEϭϬϬϬŝƐĞƋƵŝƉƉĞĚǁŝƚŚƌĞŵŽǀĂďůĞƉƵƐŚͲŽŶƐĐƌĞǁͲƚĞƌŵŝŶĂůďůŽĐŬĐŽŶŶĞĐƚŽƌƐĨŽƌƉŽǁĞƌĂŶĚŶĞƚǁŽƌŬŽƵƚƉƵƚ
ĐŽŶŶĞĐƚŝŽŶƐǁŝƚŚĐƵƐƚŽŵĞƌĞƋƵŝƉŵĞŶƚŽŶŶĞĐƚϮϰsƉŽǁĞƌĂŶĚZ^ͲϰϴϱŶĞƚǁŽƌŬĐĂďůĞƐĂƐŽƵƚůŝŶĞĚŝŶƚŚĞĨŽůůŽǁŝŶŐ
ƉĂƌĂŐƌĂƉŚƐZĞĨĞƌƚŽ&ŝŐƵƌĞƐϯƚŽϱ
CAUTION
Deactivate 24 VAC power source until all connections to the GF-N1000 are complete.
When multiple devices are powered from a common 24VAC power source, ensure that
all devices are wired in phase with power to the GF-N1000 24VAC connector at J12
(24VAC to + terminal, and return at GND terminal). Damage will occur to the GF-N1000
and/or other devices if this caution is not observed.
To prevent damage to the GF-N1000 and/or other connected network devices, observe
RS-485 network grounding and GF-N1000 24VAC grounding precautions.
The GF-N1000 contains electrostatic discharge (ESD) sensitive components. Observe
ESD precautions when handling the instrument to prevent damage. Failure to comply
can result in equipment damage.
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IG_GF-N1000-DI
_R1A

GreenFlow GF-N1000
INSTALLATION GUIDE –BACnet/MODBUS NETWORK OUTPUT THERMAL
DISPERSION AIRFLOW MEASURING DEVICE
6
GreenTrol Automation • 156 Holly View Lane., Loris SC 29569 • Toll Free: 877.4GNTROL (446.8765) • Fax: [phone] • Internet: GreenTrol.com
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4.1
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GF-N1000 24 VAC Power Connections
dŚĞ'&ͲEϭϬϬϬƌĞƋƵŝƌĞƐĂƉŽǁĞƌƐŽƵƌĐĞĐĂƉĂďůĞŽĨƉƌŽǀŝĚŝŶŐϮϮϴƚŽϮϲϰsĂƚϱs
NOTE
The 24 VAC ground (GND) connection is shared with the RS-485 network GND
connection. If an isolated output is needed, a dedicated transformer is required to
power the GF-N1000.
ϭZĞŵŽǀĞƚŚĞƚǁŽͲƚĞƌŵŝŶĂůĐŽŶŶĞĐƚŽƌĂƚƚĂĐŚĞĚƚŽƚŚĞ'&ͲEϭϬϬϬĂƚϮϰsĐŽŶŶĞĐƚŽƌ:ϭϮ
ϮŽŶŶĞĐƚϮϰsƉŽǁĞƌƚŽƚŚĞ'&ͲEϭϬϬϬĂƚϮϰsƚĞƌŵŝŶĂůďůŽĐŬ:ϭϮĂƐƐŚŽǁŶŝŶƚŚĞĚĞƚĂŝůŽĨ&ŝŐƵƌĞƐϯĂŶĚϰ
tŚĞŶƉŽǁĞƌŝŶŐŵƵůƚŝƉůĞŶĞƚǁŽƌŬĚĞǀŝĐĞƐĨƌŽŵĂĐŽŵŵŽŶƐŽƵƌĐĞŽďƐĞƌǀĞϮϰsƉŚĂƐŝŶŐŽŶĂůůĚĞǀŝĐĞƐ
;ϮϰsƉŽǁĞƌƚŽƚĞƌŵŝŶĂůϭ;нͿƌĞƚƵƌŶĂƚƚĞƌŵŝŶĂůϮ;'EͿͲƐĞĞĂƵƚŝŽŶŶŽƚĞƐͿdŚĞ'EĐŽŶŶĞĐƚŝŽŶŵƵƐƚŽŶůLJ
ďĞĐŽŶŶĞĐƚĞĚƚŽĞĂƌƚŚŐƌŽƵŶĚĂĐĐŽƌĚŝŶŐƚŽƚŚĞĨŽůůŽǁŝŶŐŐƵŝĚĞůŝŶĞƐ
CAUTION
Damage to network devices may occur if 24VAC GND terminal is connected to earth
ground and the RS-485 network is not earth grounded.
ĂͿ/ĨƚŚĞZ^ͲϰϴϱŶĞƚǁŽƌŬĐŽŶŶĞĐƚŝŽŶĨŽƌƚŚĞ'&ͲEϭϬϬϬŝƐŐƌŽƵŶĚƌĞĨĞƌĞŶĐĞĚƚŽĞĂƌƚŚƚŚĞϮϰs'E
ƚĞƌŵŝŶĂůŵĂLJĂůƐŽďĞĐŽŶŶĞĐƚĞĚƚŽĂǁŝƌĞƚŚĂƚŝƐŐƌŽƵŶĚƌĞĨĞƌĞŶĐĞĚƚŽĞĂƌƚŚ
ďͿ/ĨƚŚĞZ^ͲϰϴϱŶĞƚǁŽƌŬĐŽŶŶĞĐƚŝŽŶĨŽƌƚŚĞ'&ͲEϭϬϬϬŝƐŶŽƚŐƌŽƵŶĚƌĞĨĞƌĞŶĐĞĚƚŽĞĂƌƚŚƚŚĞϮϰs'E
ƚĞƌŵŝŶĂůŵƵƐƚŶŽƚďĞĐŽŶŶĞĐƚĞĚƚŽĂǁŝƌĞŐƌŽƵŶĚƌĞĨĞƌĞŶĐĞĚƚŽĞĂƌƚŚĂƐĚĂŵĂŐĞƚŽŽƚŚĞƌŶĞƚǁŽƌŬ
ĚĞǀŝĐĞƐŵĂLJŽĐĐƵƌ
ϯŽŶŶĞĐƚZ^ͲϰϴϱŶĞƚǁŽƌŬĐŽŶŶĞĐƚŝŽŶƐĂƚZ^ͲϰϴϱƚĞƌŵŝŶĂůďůŽĐŬ:ϮĂƐƐŚŽǁŶŝŶƚŚĞĚĞƚĂŝůŽĨ&ŝŐƵƌĞƐϯĂŶĚϰ
ŽďƐĞƌǀŝŶŐƚŚĞƉƌĞĐĂƵƚŝŽŶƐŝŶƐƚĞƉϮdŚĞĐŽŶŶĞĐƚŝŽŶƚŽƚŚĞŶĞƚǁŽƌŬŵƵƐƚďĞŵĂĚĞŝŶĂΗĚĂŝƐLJĐŚĂŝŶΗ
ĐŽŶĨŝŐƵƌĂƚŝŽŶΗdΗĐŽŶŶĞĐƚŝŽŶƐĂŶĚƐƚƵďƐĂƌĞEKdƉĞƌŵŝƚƚĞĚ
ϰ^ĞƚŶĞƚǁŽƌŬĐŽŶĨŝŐƵƌĂƚŝŽŶǀŝĂ^ϭͲ'&ͲEϭϬϬϬŽŶĨŝŐƵƌĂƚŝŽŶ/W^ǁŝƚĐŚĂƐĚĞƚĂŝůĞĚŝŶƚŚĞĨŽůůŽǁŝŶŐƉĂƌĂŐƌĂƉŚ
4.2

S1 - GF-N1000 Configuration DIP Switch Settings
CONFIGURATION DIP switch S1 contains eight separate dual-position switches in a dual inline package (DIP) as shown in detail
of Figure 3. These switches allow for setting the following GF-N1000 network parameters:
•Setting the MAC Address/Slave ID - using Switches 1 through 7
•Setting BACnet® Device Object Instance Number (if the same as the MAC Address) - using Switch 8
•Setting BACnet Baud Rate - using Switches 1 through 4
•Restoring Defaults - using Switches 1-8
•Enabling Modbus® network operation - using Switches 1 through 4
NOTE:
Prior to initializing the GF-N1000, the MAC address and the baud rate parameters may
need to be assigned depending upon your specific network.
4.3

Setting the MAC Address
The GF-N1000 MAC Address is set at the factory for a value of 2. If it is necessary to change the MAC address, set switches 1
through 7 of CONFIGURATION SWITCH S1 to any address value between 0 and 127 as follows:
1.Deactivate 24VAC power to the GF-N1000.
2.Set S1 switches 1-7 to the desired address as shown in the detail of Figure 3. Record the new MAC address value for
future reference.
3.Reapply 24VAC power to the GF-N1000. After a short delay (approximately 20 seconds), the new MAC address is active.
NOTE:
The default Object Instance is 2.
When GF-N1000 configuration is complete, confirm that the new MAC address has
been set correctly using appropriate BACnet software.
IG_GF-N1000-DI
_R1A

GreenFlow GF-N1000
INSTALLATION GUIDE –BACnet/MODBUS NETWORK OUTPUT THERMAL
DISPERSION AIRFLOW MEASURING DEVICE
7
GreenTrol Automation • 156 Holly View Lane., Loris SC 29569 • Toll Free: 877.4GNTROL (446.8765) • Fax: [phone] • Internet: GreenTrol.com


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Figure 3.GF-N1000 Circuit Board, Wiring and Configuration Switch Details
IG_GF-N1000-DI
_R1A

GreenFlow GF-N1000
INSTALLATION GUIDE –BACnet/MODBUS NETWORK OUTPUT THERMAL
DISPERSION AIRFLOW MEASURING DEVICE
8
GreenTrol Automation • 156 Holly View Lane., Loris SC 29569 • Toll Free: 877.4GNTROL (446.8765) • Fax: [phone] • Internet: GreenTrol.com

Figure 4. Power and Signal Wiring Interconnections

IG_GF-N1000-DI
_R1A

GreenFlow GF-N1000
INSTALLATION GUIDE –BACnet/MODBUS NETWORK OUTPUT THERMAL
DISPERSION AIRFLOW MEASURING DEVICE
9
GreenTrol Automation • 156 Holly View Lane., Loris SC 29569 • Toll Free: 877.4GNTROL (446.8765) • Fax: [phone] • Internet: GreenTrol.com

4.4

Setting the Baud Rate
The GF-N1000 is shipped from the factory for BACnet operation with a baud rate of 76,800bps. The baud rate can be
changed to 38,400, 19,200 or 9,600bps locally at the GF-N1000 by using internal DIP Switch SW1 as follows. Note that for
BACnet operation, changes can also be accomplished remotely over the network using AV2, or through Modbus register
30015 (see Appendices A and B).
1.Record the currently assigned MAC Address (S1 switches 1 through 7 - See Figure 3 detail).
2.Set the desired baud rate using Address Switches 1 through 4 as shown below in Figure 5.
Table 1. GF-N1000 Baud Rate Selection
Z^^/W^ǁŝƚĐŚEƵŵďĞƌWŽƐŝƚŝŽŶ D^dW
ϭ Ϯ ϯ ϰ ϱ ϲ ϳ ϴ ĂƵĚZĂƚĞ
KE K&& K&& K&& y y y y ϳϲϴϬϬ
K&& KE K&& K&& y y y y ϯϴϰϬϬ
K&& K&& KE K&& y y y y ϭϵϮϬϬ
K&& K&& K&& KE y y y y ϵϲϬϬ




3.Set DIP Switch 8 to the ON position. Allow a short delay (approximately 20 seconds) for the new baud rate to be
recognized.
4.Restore DIP Switch 8 to the OFF position.
5.Restore DIP switches 1-7 to the MAC address recorded in step 1.
4.5

J4 - GF-N1000 RS-485 Network Termination Selection
The GF-N1000 includes a network termination selector jumper at J4 (shown in Figure 3 detail) for setting network termination of
the GF-N1000 when it is installed at any point on an RS-485 network. When the GF-N1000 is located at either end of an RS-485
network or segment, it is recommended that the jumper be installed across both pins of J4. When the GF-N1000 is located at
any other point on the RS-485 network, no termination is recommended, and the jumper at J4 should be removed.
4.6

Restoring Factory Default Settings
If necessary, the following procedure can be used to restore the factory default settings to the GF-N1000:
1.If the current MAC Address will be reused, record the currently assigned address (S1 switches 1 through 7 – see Figure
3 detail).
2.Deactivate 24VAC power to the GF-N1000.
3.Set all 8 of the DIP switches (1-8) to the ON position.
4.Restore 24VAC power to the GF-N1000. Allow a short delay (approximately 20 seconds) for the factory default settings
to be recognized.
5.Deactivate 24VAC power to the GF-N1000.
6.Set all 8 of the DIP switches (1-8) to the OFF position.
7.Restore DIP switches 1-7 to the MAC address recorded in step 1.
8.Restore 24VAC power to the GF-N1000 to return it to service with the factory default settings.
IG_GF-N1000-DI
_R1A
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Only SW1 Switches 1 through 4 are used to set
the Baud Rate – See text for detail.

GreenFlow GF-N1000
INSTALLATION GUIDE –BACnet/MODBUS NETWORK OUTPUT THERMAL
DISPERSION AIRFLOW MEASURING DEVICE
10
GreenTrol Automation • 156 Holly View Lane., Loris SC 29569 • Toll Free: 877.4GNTROL (446.8765) • Fax: [phone] • Internet: GreenTrol.com

5GF-N1000 BACnet CONFIGURATION
The following paragraphs detail the final set up instructions for the GF-N1000 when using BACnet device operation. The GF-
N1000 is shipped from the factory for BACnet operation.
For Modbus operation
, proceed to GF-N1000 MODBUS CONFIGURATION section 6 of this document.
Refer to Appendix A - GF-N1000 BACnet Object properties for additional detail.
5.1

Changing BACnet Device Object Instance Number
5.1.1

Matching BACnet Device Object Instance Number to MAC Address
The BACnet Device Object Instance Number is set at the factory to match the default MAC address of 2. If necessary,
the BACnet Device Object Instance Number can be set to match a different user assigned MAC address, as follows:
1.Set the user assigned MAC address value as previously described in Setting the MAC Address procedure.
2.Deactivate 24VAC power to the GF-N1000.
3.Slide DIP Switch 8 to the ON position.
4.Restore 24VAC power to the GF-N1000. Allow a short delay (approximately 20 seconds) for the new BACnet Device
Object Instance Number to be recognized.
5.Restore DIP Switch 8 to the OFF position.
5.1.2

Setting BACnet Device Object Instance Number to a value different than MAC Address
The BACnet Device Object Instance Number can be set to a value that does not match the MAC address by using suitable
BACnet software to write to the GF-N1000 Device Object Identifier property of the Device Object. Refer to Appendix A for
additional detail.
6GF-N1000 MODBUS CONFIGURATION
The GF-N1000 is preset at the factory for BACnet network operation. Refer to Appendix B - GF-N1000 MODBUS Register Map for
available register values and settings. Default communication is set for 8 Data Bits, 1 Stop Bit and No Parity. To set the GF-
N1000 for Modbus network operation, perform the following steps.
1.The default network address is set at the factory for a value of 2. Any value between 1 and 127 can be assigned for the
GF-N1000 using Configuration DIP Switch S1 as outlined in the Setting the MAC Address paragraph of this document. If
the current network address will be reused, record the current settings of DIP switches 1 through 7.
2.With the GF-N1000 powered on, set Configuration DIP switches 1 through 4 to the ON position.
3.Toggle DIP switch 8 to the ON position for 5 seconds, and then back to OFF.
4.Restore DIP switches 1-7 to the network address recorded in step 1.
5.The GF-N1000 is now set for Modbus operation with a baud rate of 19,200bps. If necessary, the baud rate can be
changed as outlined previously in the Setting the Baud Rate paragraph of this document.
6.Configure the necessary Modbus register values as outlined in Appendix B.
IG_GF-N1000-DI
_R1A

GreenFlow GF-N1000
INSTALLATION GUIDE –BACnet/MODBUS NETWORK OUTPUT THERMAL
DISPERSION AIRFLOW MEASURING DEVICE
11
GreenTrol Automation • 156 Holly View Lane., Loris SC 29569 • Toll Free: 877.4GNTROL (446.8765) • Fax: [phone] • Internet: GreenTrol.com

7GF-N1000 INITIAL START UP / NORMAL OPERATION
The following procedure is intended for initial start up of the instrument. Following the initial set up, no further user activity is
required during normal operation.
1.Remove the cover to the electronics enclosure by removing the four screws on the cover.
2.Make sure that the 24VAC circuit breaker used to power the GF-N1000 is turned OFF until all wiring is complete!
3.Confirm 24VAC connections to the GF-N1000 power connector J12.
4.Confirm that the GF-N1000’s common 24VAC ground and network ground connection are permitted.
5.Note that the ground of the BAS must be at the same voltage reference as the ground of the GF-N1000 and the power
source.
6.Confirm the settings of CONFIG switches SW1 to SW7 as outlined in paragraphs 4 through 6 of this document.
7.Activate the 24VAC power source to power on the GF-N1000.
8.Following a brief instrument initialization, the green Activity LED will continuously flash ON for 1 second, then OFF for 1
second. This indicates normal operation. In the event of a sensor fault, the LED will produce longer continuous flashes
ON for 2 seconds, and OFF for 2 seconds.
9.Confirm that the yellow RS-485 Network LED is blinking indicating traffic between the GF-N1000 and the BAS network.
Also, verify instrument airflow and temperature at the BAS control interface.
10.Replace the GF-N1000 electronics enclosure cover and secure with the four screws removed in step 1.
8GF-N1000 ADDITIONAL INFORMATION
For additional information, contact your local GreenTrol representative or our Technical Support Team at 877.4GNTROL
(1.877.446.8765).
IG_GF-N1000-DI
_R1A

GreenFlow GF-N1000
INSTALLATION GUIDE –BACnet/MODBUS NETWORK OUTPUT THERMAL
DISPERSION AIRFLOW MEASURING DEVICE
12
GreenTrol Automation • 156 Holly View Lane., Loris SC 29569 • Toll Free: 877.4GNTROL (446.8765) • Fax: [phone] • Internet: GreenTrol.com

APPENDIX A –
Table 2. GF-N1000 BACnet Object Properties
GF-N1000 Standard Object Types Supported
Object Optional
Properties Supported
Writeable
Properties
Proprietary
Properties
Property Range
Restrictions (NOTE 1)
Device xDescription
xLocation
xMax Master
xMax Info Frames
xActive COV
Subscriptions
xObject Name
xDescription
xLocation
xObject Identifier
xAPDU Timeout
xMax Info Frames
xMax Master
None None
Analog Input 1 –
Airflow (NOTE 2)
xDescription
xReliability
xCOV Increment
xUnits
xOut of Service
xCOV Increment
xPresent Value
None Units: FPM, CFM, MPS, LPS
Analog Input 2 –
Temperature
xDescription
xReliability
xCOV Increment
xUnits
xOut of Service
xCOV Increment
xPresent Value
None Units: °C or °F
Analog Value 1 – Free
Area (NOTE 2)
xDescription
xReliability
Present Value None >= 0 (NOTE 2)
Analog Value 2 – Baud
Rate
xDescription
xReliability
Present Value None 9600, 19200, 38400, 78600
Binary Value 1 – Flow
Integration
xInactive Text
xActive Text
Present Value None None
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IG_GF-N1000-DI
_R1A

GreenFlow GF-N1000
INSTALLATION GUIDE –BACnet/MODBUS NETWORK OUTPUT THERMAL
DISPERSION AIRFLOW MEASURING DEVICE
13
GreenTrol Automation • 156 Holly View Lane., Loris SC 29569 • Toll Free: 877.4GNTROL (446.8765) • Fax: [phone] • Internet: GreenTrol.com

APPENDIX B –
Table 3. GF-N1000 Modbus Register Map
Name Address R/W Length Type Description
Airflow 30001 R 2 Float Avg Airflow (FPM, CFM, MPS, LPS)
Temperature 30003 R 2 Float Avg Temperature (°F or °C)
Ins 1 Flow 30005 R 2 Float Flow reading at the first insert
Ins 2 Flow 30007 R 2 Float Flow reading at the second insert
Ins 1 Temp 30009 R 2 Float Temperature at first insert
Ins 2 Temp 30011 R 2 Float Temperature at second insert
Area 30013 R/W 2 Float Duct area. Writing a non-zero value will set the flow
output to volumetric flow (CFM/LPS); Writing a zero
value will set the flow output to standard (FPM/MPS)
Baud 30015 R/W 2 Float
Communication baud rate (76800, 38400, 19200,
9600)
Units 30017 R/W 1 Enum 0 = IP Units, 1 = SI Units
Flow Integration 30018 R/W 1 Enum 0 = standard flow integration, 1 = no flow integration
Invert float 30019 R/W 1 Enum 0 = standard floating point format
1 = inverted floating point
Trouble 30020 R 1 Enum 0 = normal operation
1 = fault detected
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IG_GF-N1000-DI
_R1A