nvent SPECTRACOOL User manual

© 2018 nVent 89091001
Rev. M P/N 89091002
SPECTRACOOL
Remote Access contRol
INSTRUCTION MANUAL

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TABLE OF CONTENTS
Warranty and Return Policy.............................................................................................................................................................2
INTRODUCTION ..............................................................................................................................................................................................3
ENERGIZING THE CONTROLLER...................................................................................................................................................................3
CONTROL STATUS INDICATION....................................................................................................................................................................3
DISPLAYING AND CHANGING PROGRAM VARIABLES ..............................................................................................................................4
OPERATING PARAMETERS............................................................................................................................................................................4
ALARM PARAMETERS ...................................................................................................................................................................................4
OPERATING PARAMETERS............................................................................................................................................................................5
ALARM PARAMETERS ...................................................................................................................................................................................5
OPERATING REAL-TIME CLOCK (RTC) PARAMETERS................................................................................................................................5
DISPLAYING TEMPERATURE SENSOR #2....................................................................................................................................................5
COMPRESSOR RESTART TIME DELAY .........................................................................................................................................................5
ALARM OUTPUT CONTACT...........................................................................................................................................................................5
ALARM INPUT CONNECTION........................................................................................................................................................................5
ALARM CONDITION DISPLAY .......................................................................................................................................................................5
MASTER-SLAVE CAPABILTY (OPTIONAL).....................................................................................................................................6
ALARM PARAMETERS ...................................................................................................................................................................................6
MASTER-SLAVE ALARM INPUT CONNECTION...........................................................................................................................................7
REMOTE ACCESS CONTROL ..........................................................................................................................................................7
AIR CONDITIONER UNIT COMMUNICATION FEATURES ............................................................................................................................7
USB COMMUNICATION..........................................................................................................................................................................7
ETHERNET COMMUNICATION..............................................................................................................................................................7
MASTE-SLAVE CAPABILITY (OPTIONAL).............................................................................................................................................7
USING THE PC INTERFACE TOOL .................................................................................................................................................................8
USB COMMUNICATION MODE..............................................................................................................................................................8
ETHERNET COMMUNICATION MODE..................................................................................................................................................8
1. The Hoffman A.C. Monitor.........................................................................................................................................................................9
1.1 New Features in V3.1.0....................................................................................................................................................................9
2. Installing the Hoffman A.C. Monitor.........................................................................................................................................................9
3. Running the Hoffman A.C. Monitor.........................................................................................................................................................12
3.1 Controlling the Hoffman A.C. Monitor Display.............................................................................................................................13
3.2 Displaying ACU Faults....................................................................................................................................................................14
4. Conguring the Hoffman A.C. Monitor...................................................................................................................................................15
4.1 Scanning for New Air Conditioners...............................................................................................................................................15
4.2 Manually adding an air conditioner to the conguration ............................................................................................................16
4.3 Deleting an air conditioner from the conguration......................................................................................................................19
4.4 Modifying the air conditioner settings..........................................................................................................................................20
4.5 Importing a Conguration File.......................................................................................................................................................21
4.6 Exporting a Conguration File .......................................................................................................................................................22
4.7 Changing the ACU IP Address or SNMP Community Setting.....................................................................................................23
5. Monitoring or Conguring a Single ACU.................................................................................................................................................24
5.1 Monitoring a Single ACU................................................................................................................................................................24
5.2 Conguring a Single ACU...............................................................................................................................................................24
6.1 Enabling Hoffman A.C. Monitor Auto-Start and/or Alarm File Logging ....................................................................................25
6.2 Exporting the Alarm File to Microsoft Excel.................................................................................................................................26
7. Changing the Hoffman A.C. Monitor Language ....................................................................................................................................28
7.1 Overriding the detected language setting ....................................................................................................................................28
8. Hoffman A.C. Monitor Data Logging ......................................................................................................................................................29
8.1 Conguring an ACU for Data Logging ..........................................................................................................................................29
8.2 Exporting the Sensor Data to Microsoft Excel.............................................................................................................................30
8.3 Graphing the Temperature Sensor Data in Microsoft Excel........................................................................................................31
Basic Air Conditioning Trouble Shooting Check List - Remote Access Control Version........................................................................34
Symptoms and Possible Causes - Remote Access Control Version .......................................................................................................35
NOTE: Some of the information in this manual may not apply if a special unit was ordered. If
additional drawings for a special unit are necessary, they have been inserted. Contact nVent
Electrical if further information is required.
WARRANTY AND RETURN POLICY
https://hoffman.nvent.com/en/hoffman/warranty-information

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INTRODUCTION
The Remote Access Control is a parametric controller for the complete management of air conditioners. All
settings are pre-programmed at the factory. Cooling/heating set-points, cooling/heating differential and high /low
temperature alarm set-points can be adjusted by the user. Alarms are outputted through a relay contact and also
can be accessed through an Ethernet connection utilizing SNMP, EtherNet/IP, Modbus TCP, and PROFINET. A USB
connection is also provided and can be used to interface with the controller utilizing Modbus RTU.
MOUNTING THE CONTROLLER
The Remote Access Control must be mounted and enclosed inside a tool access enclosure. This Remote Access
Control comes with a DIN rail and a DIN rail mounting bracket; see below for DIN rail mounting dimensions. The
communication ports and alarm input/output terminals are located underneath the Remote Access Control.
When installing, allow sucient space under the Remote Access Control for access to communication ports and
alarm input/output terminals.
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ENERGIZING THE CONTROLLER
The controller is wired and programmed at the factory to be energized when power is supplied to the air
conditioner. The controller will default to the standalone operating mode when powered the rst time. Master-
Slave operating mode is optional and will require additional setup.
CONTROL STATUS INDICATION
The display has numerous symbols that indicate if the controller is heating, cooling, alarming, if the compressor
is enabled, and if the ambient fan is enabled. The 3 alpha-numeric characters further describe alarms and show
the cabinet temperature by default.
NOTE: The Slim Fit air conditioners DO NOT come standard with a heating option.

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SYMBOL COLOR ICON ON ICON FLASHING
1,2,3,4 AMBER 1. Compressor On
2. TLAN Device ID
3. Flashing at start up request is standalone mode
4. Master-Slave Mode:
1: TLAN Master.
2,3,4: TLAN Slave. Device ID 2,3,4 are not active in standalone mode
AAMBER Compressor On Active when compressor is ON
BAMBER Evaporator Fan On Start-up Request
CAMBER Not Used Not Used
DAMBER Master Unit Active when this is the TLAN Master
EAMBER Heater Active Not Used (always OFF)
FRED Alarm Active Active if there is an alarm condition
GAMBER Controller Active ON indicates power and activates all functions. OFF indicates
controller is in standby mode and all functions are OFF
HAMBER Not Used Not Used (always OFF)
NOTE: On the smart controller, the display symbols for “H” and “E” are always OFF. If they
turn ON, simply hold the “sun” button for greater than 5 sec to turn OFF. The electric
heater “E” symbol is required to minimize the heating setpoint (parameter A04) and/or defrost
setpoint (parameter A01). Then, hold the “Cooling” button for great than
5 sec to turn ON the snowflake symbol (“G”).
DISPLAYING AND CHANGING PROGRAM VARIABLES
Access: To view and/or change parameters, press and hold the Prg and Sel buttons for greater than 5 seconds.
Press the up or down arrow buttons until “22” is displayed, then press Sel button. When “S-P” is displayed, press
Sel.
Navigation: Press up or down arrows to display sub-menus then press Sel to select the desired sub-menu. In the
sub-menu, use up or down arrows to display parameters for viewing or changing and press Sel. Use Prg button to
back out of menu levels as desired.
Adjust: Use the up or down arrows to change the parameter value then push Sel to save that setting. If Sel is not
pressed, the change to the value will not be saved. Navigate to and change other parameters as desired. When
nished, push Prg to back out of the sub-menus to the main menu.
NOTE: The display will revert to normal temperature display mode if no buttons are pressed
for 60 seconds.
MODELS WITH °C CONTROLLER
Cooling turns ON at r01 (setpoint) and OFF at r01 (setpoint) – r02 (differential).
For example, using default values form the table below, cooling will turn ON at 35°C (setpoint) and turn
OFF at 30°C (setpoint – differential).
OPERATING PARAMETERS
Parameter Description Default Value Range
r01 Cooling set-point 35 C 20 C to 55 C
r02 Cooling differential 5 C -
P08 Door Open and/or smoke detected 28 4 or 28
ALARM PARAMETERS
Parameter Description Default Value Range
P16 High Temperature Alarm 55 C -
P19 Low Temperature Alarm 14 C -

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MODELS WITH °F CONTROLLER
Cooling turns ON at r01 (setpoint) + r02 (differential), and OFF at r01 (setpoint).
For example, using default values form the table below, cooling will turn ON at 87°F (setpoint +
differential), and turn OFF at 80°C (setpoint).
OPERATING PARAMETERS
Parameter Description Default Value Range
r01 Cooling set-point 80 F 72 F to 120 F
r02 Cooling differential 7 F -
P08 Door Open and/or smoke detected 28 4 or 28
ALARM PARAMETERS
Parameter Description Default Value Range
P16 High Temperature Alarm 125 F -
P19 Low Temperature Alarm 40 F -
OPERATING REAL-TIME CLOCK (RTC) PARAMETERS
Parameter Description Default Value Range
t01 Hour 00 to 23
t02 Minute 00 to 59
t03 Day 11 to 31
t04 Month 11 to 12
t05 Year 33 to 99
DISPLAYING TEMPERATURE SENSOR #2
Both the air inlet sensor (b01) and outlet or evaporator coil sensor (b02) can be reviewed at any time by
pressing the up and down arrow button on the front panel of the controller display. The display will revert to the
temperature sensor number b01 (air inlet temperature) or b02 (air outlet temperature) after 60 seconds. Both
sensors can also be read through the Ethernet and USB connections with optional remote access communication
board.
COMPRESSOR RESTART TIME DELAY
A factory set 5 minute (360 second) restart delay exists to reduce residual back pressure before allowing the
compressor to restart. The compressor will stay off for the entire restart duration after the compressor is
disabled. A ashing “1” on the controller display will indicate the unit is in a compressor restart delay while calling
for cooling. If the delay time is reduced to less than 5 minutes, this may cause reduced compressor life.
ALARM OUTPUT CONTACT
The smart controller has a normally open dry contact alarm output with a resistive load rating of 250 VAC to
3 Amp. The 6-POS connector terminals 3 and 4 (marked YEL/ALARM) located on the enclosure side of the
unit provides a connection to this output. The optional Remote Access Communication board can accept this
normally open dry contact alarm from the smart controller..
ALARM INPUT CONNECTION
The smart controller can accept a dry contact/switch input via the 6-POS connector terminals 1 and 2 (marked
WHT/DS1 and WHT/DS2), located on the enclosure side of the unit. This input is associated with the controller
display alarm mnemonic “tP” (door open and/or smoke detected). Note that the door open and/or smoke
detected is pre-programmed at the factory as “Normally Open”. The optional Remote Access Communication
board can accept this door open and/or smoke detected alarm from the smart controller. To use this feature,
simply connect the customer supplied wires from the cabinet door switch to DS1 and DS2 terminals.
ALARM CONDITION DISPLAY
There are eleven possible non-latching alarm conditions detectable by the controller and are indicated on the
controller display. All alarms can also be accessed through the Ethernet and USB connections with the optional
remote access communication board.

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Alarm
Mnemonic Description Cause Result Alarm Relay
tP General Alarm Door open and/or smoke detected Unit turns OFF for duration
of alarm Relay Contact closed
LA High Pressure Warning MALF high pressure switch opens
(see note 3 below) No effect on function N/A
LP Low Pressure Alarm Low pressure switch open (see note
4 below) No effect on function Relay Contact closed
E1 Air Inlet Temperature Sensor
Alarm Sensor failure See note 1 below Relay Contact closed
E2 Air Outlet Temperature
Sensor Alarm Sensor failure See note 2 below Relay Contact closed
Ht High Temperature Alarm,
default = 55°C
Air inlet temperature greater than
55°C No effect on function Relay Contact closed
Lt Low Temperature Alarm,
default = 14°C Air inlet temperature less than 14°C No effect on function N/A
A1 Frost Alarm Air outlet temperature less than or
equal to -1.0°C
Compressor and Condenser
fan OFF for duration of alarm Relay Contact closed
HP/HP1 High Pressure Serious Alarm High pressure switch open (see
note 5 below)
Unit turns OFF for duration
of alarm Relay Contact closed
LC Lost Communication Alarm
The Master cannot communicate
with any Slave, or the Slave cannot
communicate with the Master
No effect on function. Unit
will enter standalone mode N/A
LC1 Lost Communication Alarm The Master cannot communicate
with one of the Slaves
No effect on function. Unit
will enter standalone mode N/A
NOTE 1: Air inlet temperature sensor will default to air outlet temperature sensor. Cooling setpoint
default to 10°C.
NOTE 2: Unit continues to operate without evaporator freeze protection.
NOTE 3: The MALF high pressure switch is optional.
NOTE 4: The Low Pressure switch is optional.
NOTE 5: The High Pressure (HP) or High Pressure Serious (HP1) switch is optional.
MASTER-SLAVE CAPABILTY (OPTIONAL)
The Master-Slave capability is included as standard and can accommodate up to four (4) air conditioners in a single cabinet.
In the Master-Slave operating mode, there is a delay period of 20 seconds between startup of each unit during the startup.
For example, the master unit number 1 starts rst, unit number 2 will start after 20 seconds, followed by unit 3 and another
20 seconds, and so on.
Note the controller default operating mode is single or standalone. To initiate the Master-Slave operating mode,
parameters H24 and H25 require reconfiguration as described below. TLAN communication and Door Open cables
are also required to interconnect the air conditioners.
• Connect the door open and/or smoke detected harness to the DS1 and DS2 terminals on the enclosure side of the air conditioner
unit in parallel. The maximum length of the door switch harness between two air conditioners is 3.33 meter (10 feet). This
harness is NOT included with the Master-Slave option. It is offered separately as an accessory.
• Connect the TLAN harness to the MS1 and MS2 terminals on the enclosure side of the air conditioner unit in parallel. The
maximum length of the TLAN communication cable is 10 meters (30 feet) and 3.33 meters (10 feet) between the two air
conditioners. This harness is NOT included with Master-Slave option. It is offered separately as an accessory.
• Select one of the units in the group to be the master unit. This is indicated unit number 1
• Select the slave units, numbers 2, 3 and 4 in sequence.
ALARM PARAMETERS
Parameter Description Default Value Range
h24 Device unit ID 00 to 4
h25 Number of units 42 to 4
NOTE 6: To initiate Master-Slave operating mode, set parameter h24 (device unit ID) of master unit to 1. Set
parameter h24 of slave units as applicable. Set parameter h24 (unit number 2) to 2, set parameter h24 (unit number
3) to 3, and set parameter h24 (unit number 4) to 4.
NOTE 7: Set parameter h25 (number of units) of each unit to the same value, for example, h25 = 2 if only two units
are connected in a group, h25 = 3 if three units are in a group and h25 = 4 if four units are in a group.

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MASTER-SLAVE ALARM INPUT CONNECTION
The smart controller can accept a TLAN communication via the 6-POS connector terminals 5 and 6 marked MS1
and MS2 located on the enclosure side of the unit. This TLAN communication is associated with the controller
display alarm “LC” and “LC1”, lost communication.
To use the TLAN communication feature, simple connect the TLAN harness to MS1 and MS2 terminals and to
MS1 and MS2 of each unit in parallel.
REMOTE ACCESS CONTROL
AIR CONDITIONER UNIT COMMUNICATION FEATURES
An optional communication board offers capabilities that include Pronet, EtherNet/IP, Modbus TCP, and SNMP
protocols through Ethernet and Modbus RTU protocol via USB. Hoffman® Cooling has a PC Interface Tool
available for download that can utilize either mode to communicate with the air conditioner unit.
USB COMMUNICATION
This communication mode allows direct connection of a PC to the air conditioner unit. The protocol
supported is Modbus RTU. Use the PC Interface Tool to communicate with the air conditioner unit. A
MINI-b USB connection is provided.
ETHERNET COMMUNICATION
This communication mode allows remote connection to the air conditioner unit using SNMP, Modbus
TCP, EtherNet/IP, and Pronet protocols. Customers using their own software can download a MIB le for
SNMP, Coil_Register le for Modbus TCP, EDS le or EtherNet_IP Object le for EtherNet/IP, and GSDML
le for Pronet.
NOTE: ACU has a default IP Address of 192.168.1.2
Both Ethernet and USB communication modes allow the ability to:
• Read ACU inlet and outlet air temperatures
• Read and change Cooling Set-point and Cooling Differential
• Read and change Heating Set-point, Heating Differential
• Read and change High and Low Temperature Alarm Settings
• Read and change Gateway IP Address, Device IP Address, Subnet Mask, Trap IP Address and Community
• Read and change Unit Identication
• Read and change the state of IP addressing (static or dynamic)
• Read current Alarm Status
• Read MAC Address
• Read and change the door open and/or smoke detected switch polarity
SOFTWARE AND CONFIGURATION FILE DOWNLOADS
The PC Interface Tool, MIB le, EDS le, EtherNet_IP Object le and Coil_Register le can be downloaded
from www.nventprotect.com.
MASTE-SLAVE CAPABILITY (OPTIONAL)
In the master-slave application, only one Remote Access Communication board is required. All alarms
are communicated through the TLAN serial connection, except the door open and/or smoke detected
alarm. Door open and/or smoke detected switch polarity can be remotely changed from Normally Open to
Normally Close if needed.
Note that if the door open and/or smoke detected harness is not used, and the door switch is
wired to only one of the units, for instance, the master unit. If the power of the master unit is
OFF, the slave units will NOT detect the door open alarm and they will continue operating in
standalone mode even if the door is open.
SOFTWARE AND CONFIGURATION FILE DOWNLOADS
The PC Interface Tool, MIB le, Coil_Register le, EDS le or EtherNet_IP Object le, and GSDML le can be
downloaded from http://www.nventprotect.com/en/na/Product-Enclosure-Cooling-Heating

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USING THE PC INTERFACE TOOL
The PC Interface Tool gives the user the ability to communicate with the air conditioner unit to read/write
parameters using either Ethernet or USB connections.
USB COMMUNICATION MODE
NOTE: Before connecting unit to the PC, make note of the comm ports present. After the unit
is connected to the PC, a new comm port will be added to the list. Use this new comm port.
• From Tools menu select Use Ethernet
• When Use Ethernet is unchecked, then Comm Port menu is enabled, Device IP and Community boxes are not
shown, and USB communication can be used
• To set the comm port, choose Comm Port from the Tools menu and then select the comm port from the combo box
VIEWING AIR CONDITIONER UNIT VALUES
To view Air Conditioner Unit values
• Select the ACU Values tab
• Select the Enable Comm button (the PC Interface will now be communicating with unit)
• To stop communication select the Disable Comm button
CHANGING AIR CONDITIONER UNIT VALUES
To change ACU Values
• Select the Settings tab
• Select the value to change
• Make the change to the value
• Select the Change Setting button
• Change can be veried in ACU Values tab
VIEWING AND CHANGING ETHERNET INFORMATION
To view and change Ethernet Information
• Select Ethernet Info tab
To view Ethernet Information
• Click Read Ethernet Info button
To change to dynamically assigning IP Address Mode
• Check Use DHCP Server checkbox
• Enter Trap IP Address and Community
• Click Load Ethernet Info button
To change to statically assigning IP Address Mode
• Uncheck Use DHCP Server checkbox
• Enter Device IP Address, Subnet Mask, Gateway IP Address, Trap IP Address and Community
• Click Load Ethernet Info button
ETHERNET COMMUNICATION MODE
Each unit has two community strings. One is a Read/Write community string (defaulted to
‘private’) that can be changed by the customer (must be 4 to 8 characters long). The other is a
Read-Only community string (‘public’) and cannot be changed.

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1. The Hoffman A.C. Monitor
The Hoffman A.C. Monitor is a Windows®application for the complete management of Hoffman
air conditioners. The initial air conditioner settings; cooling/heating set-points, cooling/heating
differential and high/low temperature alarm set-points are pre-programmed at the factory, but
can be locally or remotely adjusted by the user. Alarms are output from the air conditioner relay
contacts and also can be accessed through an Ethernet network connection. A USB serial
connection is provided on the air conditioner to congure the network interface and air conditioner
settings before it is connected to a network.
Windows is a registered trademark of Microsoft Corporation in the United States and/or other countries.
When a Commboard is installed in a Hoffman air conditioner, it can communicate with an external
computer or PLC using the SNMP, EtherNet/IP, Modbus TCP, and PROFINET protocols.
1.1 New Features in V3.1.0
• Support for Master-Slave ACU congurations, with one Master ACU and up to three slave ACUs.
• Support for conguring the polarity of the door open/smoke detected switch with Control rmware version
11 or newer.
• Added support for the Mexican Spanish language
2. Installing the Hoffman A.C. Monitor
Note: If you are upgrading from V3.0.3 or V3.0.4 to V3.0.5, the location where configuration
files are stored has changed. You should follow the procedure in 4.6 Exporting a Configuration
File on page 22 to export the configuration file to a local directory, upgrade the application,
and then follow the procedure in 4.5 Importing a Configuration File on page 21 to import the
original configuration file.
• Unzip the Hoffman A.C. Monitor 3.1.0 Setup.zip le into a temporary directory.
• Double click on the Hoffman A.C. Monitor 3.1.0 Setup.exe le to start the installation process.
• Click on the “Next” button when the installation window opens.

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• If the default installation directory is OK click the “Next” button.
• By default, the installation will put the User’s Manual and the Serial USB driver in the C:\Users\<your userid>\
Documents\Hoffman directory. If you don’t want the User’s Manual, uncheck the box. If it is OK, click the “Next”
button.
• If the default Start Menu folder “Hoffman” is OK, click the “Next” button.