TankNet PL-1 User manual

PL-1 Thermostat User’s Guide
Version 2.0
Firmware Version 2.0
- 2 -
Table of Contents
Introduction................................................ 1
Conventions................................................ 2
Front Panel Layout........................................3
Thermostat Modes........................................4
Thermostat Mode Programming......................5
Set Point (SET 1)......................................... 6
Set Point 2 (SET 2)………………………………………….. 7
Temperature Units........................................8
Probe Display...............................................9
Probe Alarms (P1A and P2A)..........................10
High Alarm (AL—)......................................... 11
Low Alarm (AL_)...........................................12
Brix Entry (Br) ............................................ 13
Pump-over Entry (Po)................................... 14
Pump-over Duration (PoD)............................ 15
Thermostat Configuration Menu (CC).............. 16
Thermostat Differential (Dif)............... 17
Unit Lock (UL)...................................18
Cooling Probe (CP)………………………………. 19
Heating Probe (HP)........................... 20
Heat Relay (Hr)................................ 21
Heat Mode Disable (Hd)..................... 22
Data Entry Disable (ddE)....................23
Power-up Delay (Pud)........................24
Show “OFF” (SoF)………………………………… 25
Network Installation (service function)............ 26
Wiring - Power, Solenoids & Probe………………….. 27
Wiring - Internal Cable Connections................28
Fuses and Service........................................ 29

- 1 -
Introduction
Congratulations on your purchase of the model
PL-1 TankNET®Thermostat, the wine industry’s only
purpose built, network-enabled thermostat, featuring
PowerLine Communications Technology!
Whether used stand-alone or networked to a TankNET®
Web Server, the PL-1 thermostat is designed to provide
years of reliable and accurate service.
Key Features:
Digital Temperature Sensing (patent pending)
X-Bus™ Expansion Technology (patent pending)
Free Topology and PowerLine Networking
NEMA-4X “cellar hardened” Enclosure
Web Enabled via optional TankNET® server
For More Information and Technical Support
If you have technical questions that are not answered
by this document you can get technical support from
Acrolon Technologies, Inc. or one of its authorized
distributors or service companies.
Acrolon Technologies, Inc.
19229 Sonoma Hwy. #256
Sonoma, CA 95476
Phone: [phone]
Fax: [phone]
E-mail: [email protected]
Web: www.acrolon.com
Printed in the United States of America
Copyright ©2005 by Acrolon Technologies, Inc.
- 2 -
Conventions
Please take a moment to review the following
conventions which are used throughout this manual.
Button Press: To press a button means to press and
release the button within a relatively short period of
time.
Button Hold: To hold a button means to depress the
button and to hold it down for a certain period of time.
SET button: This button is used to enter and exit
programming mode and also to select the next
programming parameter.
Entering programming mode: To enter program
mode press (i.e., press and release) the SET button.
Upon entering program mode, the set point
annunciator (“SET”) will flash while the thermostat set
point temperature is displayed.
Exiting programming mode: To exit programming
mode, hold the SET button for approximately 2 seconds
or refrain from pushing any buttons for approximately
12 seconds.

- 3 -
Front Panel Layout
Legend:
1. LCD display window
2. SERVICE LED – used to indicate network configuration
status
3. SET Button - used to enter and exit programming mode
and to advance through thermostat parameters
4. DOWN Button - used to adjust thermostat parameters
5. UP Button - used to adjust thermostat parameters
3
1
2
4 5
- 4 -
Thermostat Modes
The PL-1 Thermostat supports the following thermostat
modes:
COOL Mode - In this mode the thermostat will
engage the cooling solenoid via RELAY 1 whenever
the cool probe temperature1rises above the set point
value.
HEAT Mode - In this mode the thermostat will
engage the heating solenoid (selectable between
RELAY 1 and RELAY 2)2whenever the heat probe
temperature3falls below the set point value.
•AUTO Mode - In this mode the thermostat will
automatically switch between HEAT and COOL modes
as required. The following are the salient parameters
and operating characteristics of AUTO mode:
•RELAY 1 is always used for COOLING
•RELAY 2 is always used for HEATING
•Set Point (SET 1) is the COOLING set point
•Set Point 2 (SET 2) is the HEATING set point
•HEATING and COOLING functions are mutually exclusive,
with COOLING taking precedence over HEATING. In other
words, should conditions be such that the criteria for both
heating and cooling are met simultaneously, the
thermostat will engage only the cooling relay and not the
heating relay.
OFF – In this mode all thermostatic operation is
disabled as are all alarms. Additionally, when
operating in a TankNET®server environment, data
logging and alarm notifications for the thermostat are
also disabled.
1See COOL PROBE (“CP”) parameter
2See HEAT RELAY (“Hr”) parameter
3See HEAT PROBE (“HP”) parameter

- 5 -
Thermostat Mode Programming:
1. Press and release the SET button as needed to
advance to mode selection. This is indicated by the
flashing of the currently selected mode annunciator.
(“COOL”, “HEAT” or “OFF”) in the display window.
2. Press the UP/DOWN buttons to select the desired
mode
3. Hold the SET button to exit programming mode OR
press and release the SET button again to advance to
the next programming parameter
COOL Related Parameters:
•Set Point
•Cool Probe (“CP”)
•Differential (“diF”)
HEAT Related Parameters:
•Set Point
•Heat Probe (“HP”)
•Heat Relay (“Hr”)
•Differential (“DiF”)
AUTO Related Parameters:
•SET 1 (Cool)
•SET 2 (Heat)
•Cool Probe (“CP”)
•Heat Probe (“HP”)
•Differential (“diF”)
OFF Related Parameters:
•Show off “SoF”
HEAT and AUTO modes are NOT available while the “Hd” = 1 - 6 -
Set Point (SET 1)
The Set Point (SET 1) parameter is used by the PL-1
thermostat modes as follows:
In COOL and AUTO mode this Set Point value
determines the temperature4above which the cooling
relay (RELAY 1) will be engaged
In HEAT mode this Set Point value determines the
temperature5below which the heat relay6will be
engaged
Programming:
1. Press and release the SET button until the “SET”
annunciator flashes.
2. Press the UP or DOWN buttons as required to adjust
the Set Point value. Note: holding either the UP or
DOWN button will cause the set point value to ramp
accordingly.
3. Hold the SET button to exit programming mode OR
press and release the SET button again to advance to
the next programming parameter
4See COOL PROBE (“CP”) parameter
5See HEAT PROBE (“HP”) parameter
6See HEAT RELAY (“Hr”) parameter

- 7 -
Set Point 2 (SET 2)
The Set Point 2 (SET 2) parameter, which is only available in
AUTO mode, determines the temperature7below which the
heating relay will be engaged. In AUTO mode, the Heat Relay
(“Hr”) setting is ignored and RELAY 2 is always engaged
whenever heating is called for.
Programming:
1. Press and release the SET button until the “SET 2”
annunciator flashes.
2. Press the UP or DOWN buttons as required to adjust
the Set Point value. Note: holding either the UP or
DOWN button will cause the set point value to ramp
accordingly.
3. Hold the SET button to exit programming mode OR
press and release the SET button again to advance to
the next programming parameter
7See HEAT PROBE (“HP”) parameter - 8 -
Temperature Units
The PL-1 thermostat can be configured to display
temperature values in either Celsius or Fahrenheit.
Programming:
1. Press and release the SET button until Units
annunciator (°F or °C) flashes.
2. Use the UP / DOWN buttons to toggle this parameter
between °C and °F.
3. Hold the SET button to exit programming mode OR
press and release the SET button again to advance to
the next programming parameter
This parameter cannot be changed while the Units Lock (“UL”) parameter
is set to “On”.

- 9 -
Probe Display
The PL-1 thermostat supports up to two X-Bus™
temperature probes and allows the operator to toggle
between the two probe temperature readings.
Programming:
1. Press and release SET button until the “PROBE”
annunciator flashes.
2. Press the UP or DOWN button to toggle between the
available probes.
3. Hold the SET button to exit programming mode OR
press and release the SET button again to advance to
the next programming parameter
This setting is only in effect during programming mode. During normal
operating modes probe temperatures are displayed per the following:
•In COOL and AUTO modes the temperature of the designated Cool
Probe (“CP”) will be displayed.
•In HEAT mode the temperature of the designated Heat Probe
(“HP”) will be displayed.
- 10 -
Probe Alarms (“P1A” and P2A”)
The PL-1 includes two probe alarm enables, one for each
probe that can be attached to the thermostat. A value of
“On” enables alarms (high/low and probe fault) for the
selected probe. A value of “OFF” disables alarms for the
selected probe, regardless of the values assigned to that
probes high/low alarm threshold parameters. Alarms are
indicated locally via an “ALARM” annunciator and remotely
via e-mail in TankNET server environments.
Probe 1 Alarms (“P1A”): On / OFF
Probe 2 Alarms (“P2A”): On / OFF
Programming:
To enable or disable temperature alarms for a given probe:
1. Press and release the SET button as needed to advance
to the “P1A” or “P2A” programming parameter
2. Press the UP or DOWN button once to display the current
parameter value. With the current value displayed, use
the UP/DOWN buttons to adjust the parameter to the
desired value
3. Hold the SET button to exit programming mode OR press
and release the SET button again to advance to the next
programming parameter

- 11 -
High Alarm Threshold (“AL--”)
This parameter determines the probe temperature above
which an alarm will be triggered.
Programming:
To adjust the high alarm temperature threshold for the
selected probe alarm:
1. Press and release the SET button as needed to advance
to the “AL--” parameter for the desired probe
2. Press the UP or DOWN button once to display the current
parameter value. With the current value displayed, use
the UP/DOWN buttons to adjust the parameter to the
desired value
3. Hold the SET button to exit programming mode OR press
and release the SET button again to advance to the next
programming parameter
This parameter is only accessible when the corresponding probe alarm is
enabled (PxA = “On”, where x = probe number).
- 12 -
Low Alarm Threshold (“AL_”)
This parameter determines the probe temperature below
which an alarm will be triggered.
Programming:
To adjust the low temperature threshold for the selected
probe alarm:
1. Press and release the SET button as needed to advance
to the “AL_” parameter for the desired probe
2. Press the UP or DOWN button once to display the current
parameter value. With the current value displayed, use
the UP/DOWN buttons to adjust the parameter to the
desired value
3. Hold the SET button to exit programming mode OR press
and release the SET button again to advance to the next
programming parameter
This parameter is only accessible when the corresponding probe alarm is
enabled (PxA = “On”, where x = probe number).

- 13 -
Brix Entry (“Br”)
The Brix entry screen allows Brix measurements taken at the
tank to be entered directly into the thermostat. In
TankNET®server environments, Brix measurements entered
at the thermostat are recorded into the TankNET®database
and are available in the form of fermentation graphs via the
Web.
Programming:
Valid range: -9.9 to 50.0
NULL value: -10.0 = “---”
1. Press and release the SET button until the “BRIX”
annunciator flashes
2. Use the UP / DOWN buttons to adjust the parameter to
the desired value
3. Hold the SET button to exit programming mode OR press
and release the SET button again to advance to the next
programming parameter
- 14 -
Pump-over Entry (“Po”)
The Pump-over event entry screen allows cellar crews to
enter pump-over events at the thermostat. In TankNET®
server environments, pump-overs are viewable on both the
winery maps and on the fermentation graphs via Web
Browser.
Programming:
1. Press and release the SET button until the “Po”
parameter is displayed.
2. Press the UP or DOWN button once to display the current
parameter value. With the current value displayed, use
the UP/DOWN buttons to adjust the parameter to the
desired value
3. Hold the SET button to exit programming mode OR press
and release the SET button again to advance to the next
programming parameter
Note:
The pump-over entry feature is designed for minimal user
interaction. Cellar staff need not remember to change the pump-
over state from “On” to “OFF after completing a pump-over
operation. Instead, the thermostat will automatically change the
pump-over state from “On” to “OFF” as determined by the default
pump-over duration. See Pump-over Duration (“Pod”) for more
information about this mechanism.

- 15 -
Pump-over Duration (“Pod”)
This parameter is used to determine how long (in minutes)
the thermostat will wait before resetting the Pump-over state
from “On” to “OFF”.
The unit of measure for this parameter is minutes.
Programming:
1. Press and release the SET button until the “Pod”
parameter is displayed.
2. Press the UP or DOWN button once to display the current
parameter value. With the current value displayed, use
the UP/DOWN buttons to adjust the parameter to the
desired value (in minutes).
3. Hold the SET button to exit programming mode OR press
and release the SET button again to advance to the next
programming parameter
Note: Setting this parameter to zero (0) disables the
automatic pump-over shut off feature and will require cellar
staff to manually turn pump-overs (“Po”) OFF.
This parameter is only accessible while “Po” is set to “On”.
- 16 -
Control Configuration (“CC”)
This parameter is used to grant access to the advanced
thermostat configuration parameters.
Programming:
1. Press and release the SET button until the “CC” menu
indicator is displayed.
2. Press the UP or DOWN button to turn this menu “ON”
3. Press and release the SET button to advance to the first
control configuration parameter.
Note:
This parameter is reset to “OFF” upon exiting programming
mode.

- 17 -
Thermostat Differential (“diF”)
This parameter determines the thermostat switching
differential (or hysteresis), which applies to all thermostat
modes.
Programming:
1. Press and release the SET button until the “Dif”
parameter is displayed.
2. Press the UP or DOWN button once to display the current
parameter value. With the current value displayed, use
the UP/DOWN buttons to adjust the parameter to the
desired value.
3. Hold the SET button to exit programming mode OR press
and release the SET button again to advance to the next
programming parameter
This parameter is only accessible while the Thermostat Configuration
menu (“CC”) is set to “On”.
- 18 -
Units Lock (“UL”)
This parameter can be used to prevent inadvertent changes
to the local temperature display units setting. When this
parameter is set to “On” the thermostat’s temperature units
can not be changed locally.
Programming:
1. Press and release the SET button until the “UL”
parameter is displayed.
2. Press the UP or DOWN button once to display the current
parameter value. With the current value displayed, use
the UP/DOWN buttons to toggle this parameter between
“On” and “Off”
3. Hold the SET button to exit programming mode OR press
and release the SET button again to advance to the next
programming parameter
This parameter is only accessible while the Thermostat Configuration
menu (“CC”) is set to “On”.

- 19 -
Cool Probe (“CP”)
The PL-1 thermostat supports two temperature probes. The
Cool Probe (“CP”) parameter tells the thermostat which
probe to use for cooling. Only those probes which are
attached to the thermostat can be assigned to the Cool
Probe parameter.
Programming:
1. Press and release the SET button until the “CP”
parameter is displayed.
2. Press the UP or DOWN button once to display the current
parameter value. With the current value displayed, use
the UP/DOWN buttons to toggle this parameter between
the available probes.
3. Hold the SET button to exit programming mode OR press
and release the SET button again to advance to the next
programming parameter
This parameter is only accessible while the Thermostat Configuration
menu (“CC”) is set to “On”.
- 20 -
Heat Probe (“HP”)
The PL-1 thermostat supports up to eight temperature
probes. The Heat Probe (“HP”) parameter tells the
thermostat which probe (or sensor in the case of a
Stratiprobe®) to use for heating. Only those probes which
are attached to the thermostat can be assigned to the Heat
Probe parameter.
Programming:
1. Press and release the SET button until the “HP”
parameter is displayed.
2. Press the UP or DOWN button once to display the current
parameter value. With the current value displayed, use
the UP/DOWN buttons to toggle this parameter between
the available probes.
3. Hold the SET button to exit programming mode OR press
and release the SET button again to advance to the next
programming parameter
This parameter is only accessible while the Thermostat Configuration
menu (“CC”) is set to “On”.

- 21 -
Heat Relay (“Hr”)
This parameter determines which of the two internal relays
will be engaged for heating. This setting only applies to
HEAT mode and has no effect in COOL and AUTO modes.
Programming:
1. Press and release the SET button until the “Hr”
parameter is displayed.
2. Press the UP or DOWN button once to display the current
parameter value. With the current value displayed, use
the UP/DOWN buttons to toggle this parameter between
the Relay 1 and Relay 2.
3. Hold the SET button to exit programming mode OR press
and release the SET button again to advance to the next
programming parameter
This parameter is only accessible while the Thermostat Configuration
menu (“CC”) is set to “On”.
- 22 -
Heat-Modes Disable (“Hd”)
This parameter can be used to prevent the thermostat from
being set to any of the heating modes. When this parameter
is set to “1” only COOL and OFF modes are allowed.
Programming:
1. Press and release the SET button until the “Hd”
parameter is displayed.
2. Press the UP or DOWN button once to display the current
parameter value. With the current value displayed, use
the UP/DOWN buttons to toggle this parameter between
the 0 (allow heat mode) and 1 (disable heat mode).
3. Hold the SET button to exit programming mode OR press
and release the SET button again to advance to the next
programming parameter
This parameter is only accessible while the Thermostat Configuration
menu (“CC”) is set to “On”.

- 23 -
Data Entry Disable (“dEd”)
This parameter is used to disable brix and pump-over data
entry at the thermostat. Setting the value of this parameter
equal to “1” disables brix and pump-over entry. The factory
default value of this parameter is “0” (brix and pumpover
data entry enabled).
Programming:
1. Press and release the SET button until the “dEd”
parameter is displayed.
2. Press the UP or DOWN button once to display the current
parameter value. With the current value displayed, use
the UP/DOWN buttons to toggle this parameter between
the 0 (brix and pumpover entry enabled) and 1 (brix and
pumpover entry disabled).
3. Hold the SET button to exit programming mode OR press
and release the SET button again to advance to the next
programming parameter
This parameter is only accessible while the Thermostat Configuration
menu (“CC”) is set to “On”. - 24 -
Power Up Delay (“Pud”)
This parameter is used to delay thermostatic operation for a
pseudo-random period of time immediately following power
up. Setting this parameter to a value of “1” inhibits
thermostatic operation for a period of between 240 and 320
seconds at power up. Setting the “Pud” parameter to a value
of “0” (factory default) disables this delay function. A count-
down timer (in seconds) is displayed while thermostat delay
is in effect. Pressing any front panel button during the count
down will cancel the delay and cause the thermostat to
resume normal operation.
Programming:
1. Press and release the SET button until the “Pud”
parameter is displayed.
2. Press the UP or DOWN button once to display the current
parameter value. With the current value displayed, use
the UP/DOWN buttons to toggle this parameter between
the 0 (no power delay) and 1 (delay at power up).
3. Hold the SET button to exit programming mode OR press
and release the SET button again to advance to the next
programming parameter
This parameter is only accessible while the Thermostat Configuration
menu (“CC”) is set to “On”.

- 25 -
Show OFF (“SoF”)
The value of this parameter determines whether the
thermostat displays probe temperature or the text
“OFF” in the LCD window when the thermostat is in the
OFF mode. A value of “1” causes the thermostat to
show “OFF” while in OFF mode. A value of “0” (factory
default) causes the thermostat to display probe
temperature while in OFF mode.
Programming:
1. Press and release the SET button until the “SoF”
parameter is displayed.
2. Press the UP or DOWN button once to display the current
parameter value. With the current value displayed, use
the UP/DOWN buttons to toggle this parameter between
the 0 (show probe temperature) and 1 (show “OFF”).
3. Hold the SET button to exit programming mode OR press
and release the SET button again to advance to the next
programming parameter
This parameter is only accessible while the Thermostat Configuration
menu (“CC”) is set to “On”.
- 26 -
Network Service Function
+
The SERVICE function is primarily used to register the
thermostat with a TankNET®server during network
installation. Once registered, the thermostat can then be
monitored and controlled via the TankNET®Web Software.
The SERVICE function also contains an LED, which is used to
indicate the network configuration state of the thermostat.
The typical network configuration states are:
1. Unconfigured (factory default): In this state the
Service LED will flash ON and OFF at a rate of
approximately 1.5 hertz (times per second). This
state is normal for thermostats that have not yet
been registered with a TankNET®server.
1. Configured: In this state the Service LED will remain
dark. This state is normal for thermostats that have
been registered with a TankNET®server.
Uninstalling a Thermostat:
The SERVICE function can also be used to remove a
thermostat from a TankNET®network.
CAUTION: This operation will cause the thermostat to
become inaccessible from the TankNET®Web Software.
To remove the thermostat from an existing TankNET®
network, hold down both the SET and UP ARROW buttons
simultaneously for approximately 10 seconds.
For non-networked environments in which the flashing SERVICE LED
may be undesirable, a jumper is provided inside the thermostat (J5) to
disable SERVICE LED activity.
IMPORTANT: THIS JUMPER SHOULD REMAIN IN THE ENABLED POSITION
FOR NETWORKED THERMOSTATS.

- 27 -
External Wiring
Notes: A) Maximum wire gauge per contact = 16 AWG.
B) Jumper required (as shown) for switched leg
- 28 -
Internal Cable Connections
A standard PL-1 thermostat has two internal ribbon cables
that must be connected during installation. These cable
connections are shown below. When installing, snap each
cable into its mating connector to ensure a reliable
connection.

- 29 -
Fuses and Service
The PL-1 thermostat has been designed to provide years of
reliable service in harsh cellar environments. In the unlikely
event that you do experience a problem with your
thermostat, please contact Acrolon technical support for
assistance via 707-938-1300 or [email protected].
The PL-1 thermostat contains three internal fuses, which are
located on the power supply assembly. Under normal
operating conditions these fuses should remain intact.
However, it is quite common for a solenoid failure (usually a
shorted coil) to cause the corresponding relay fuse to fail
(open). In such cases, no energy will be transferred to the
solenoid when the relay is engaged.
IMPORTANT!
USE ONLY SPECIFIED FUSES FOR REPLACEMENT
RISK OF ELECTRIC SHOCK!
BE SURE TO DISCONNECT POWER AT THE SOURCE
BEFORE OPENING THE THERMOSTAT FOR ANY
REASON!
Main Fuse
(F3)
Littlefuse P/N
021806.3HXP
Relay 1 Fuse (F1)
Wickmann P/N
3961500044
Relay 2 Fuse (F2)
Wickmann P/N
3961500044