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TankNet PL-1, User Manual

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TankNet PL-1 User Manual Download Page 16

- 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 

Summary of Contents for PL-1

Page 1: ...1A 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 Solen...

Page 2: ...9 Sonoma Hwy 256 Sonoma CA 95476 Phone 707 938 1300 Fax 707 938 1342 E mail support acrolon com 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 sho...

Page 3: ...lue 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 w...

Page 4: ...rs 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 temperature4 above which the cooling relay RELAY 1 will be engaged In HEAT mode this Set Point value determines the temperature5 below which the heat relay6 will be engaged Prog...

Page 5: ...e 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 7 See 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 ...

Page 6: ...1A 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 ...

Page 7: ...s 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...

Page 8: ...nts 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...

Page 9: ...ming 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 ...

Page 10: ... 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 on...

Page 11: ...er 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 rel...

Page 12: ...is 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 di...

Page 13: ...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 i...

Page 14: ...e 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 ...

Page 15: ...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 ...

Page 16: ...wer 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 A...

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