Related Manuals for Danfoss AK-PC 781
Summary of Contents for Danfoss AK-PC 781
- Page 1 User Guide Capacity controller with heat recovery AK-PC 781 ADAP-KOOL® Refrigeration control systems...
- Page 2 Regarding the use of AKM, reference is made to the AKM Manual. Validity This menu operation (from March 2013) applies to controller type AK-PC 781, code number 080Z0186 / 080Z0187 / 080Z0188 / 080Z0189 / 080Z0190 with programme version 4.1x. Function groups The operation is divided up into several function groups.
- Page 3 The operation from the AKM programme cannot contain them all. If there is a need for access to all measurements and settings, you should make use of Service Tool type AK-ST 500. AK-PC 781 Version 4.1x Menu operation RC8CE202 © Danfoss 03/2013...
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Page 4: Main Settings
Actual temperature at outlet from the gas cooler MC dP0 offset K Actual displacement value for the suction pressure in connection with a “P0 Optimiser” function (Master control function in AKA gateway) Menu operation RC8CE202 © Danfoss 03/2013 AK-PC 781 Version 4.1x... - Page 5 Displacement of suction pressure as a function of external signals 0: Reference = set reference + night offset + offset from external 0-10 V signal 1: Reference = set reference + offset from P0 optimization + night offset AK-PC 781 Version 4.1x Menu operation RC8CE202 © Danfoss 03/2013...
- Page 6 Condensing pressure in °C. (measured with the pressure transmitter) Gc status Actual gas cooler operation: 0=Off. 1=Standby. 2=Max COP operation. 3=Heat recovery. 4=Extra capacity. 5=Manual control. Pgc Bar Actual gas cooler pressure Menu operation RC8CE202 © Danfoss 03/2013 AK-PC 781 Version 4.1x...
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Page 7: High Pressure Control
Actual discharge gas temperature Sgc °C Actual temperature at outlet from the gas cooler Shp °C Read temperature at high pressure valve Vhp OD% Read opening degree of high pressure valve AK-PC 781 Version 4.1x Menu operation RC8CE202 © Danfoss 03/2013... -
Page 8: Oil Management
When “ON”, the controller is in alarm condition. Comp. ctrl. temp °C Actual temperature for control sensor (Po or S4) Comp. ctrl. ref. °C Actual reference temp. for compressor capacity (incl. external reference signal, if any) Menu operation RC8CE202 © Danfoss 03/2013 AK-PC 781 Version 4.1x... - Page 9 Setting of required discharge pressure in °C Dimensioning tm K Dimensioning mean temperature differential between air- and condensing temperature at full load for the condenser in question (Typical 8 – 15K). AK-PC 781 Version 4.1x Menu operation RC8CE202 © Danfoss 03/2013...
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Page 10: Heat Recovery
Condensing pressure (measured with the pressure transmitter) Tc °C Condensing pressure in °C. (measured with the pressure transmitter) Gc status Actual gas cooler operation: 0=Off. 1=Standby. 2=Max COP operation. 3=Heat recovery. 4=Extra capacity. 5=Manual control. Menu operation RC8CE202 © Danfoss 03/2013 AK-PC 781 Version 4.1x... -
Page 11: Alarm Priorities
Medium priority is defined with setting = 2 Low priority is defined with setting = 3 Log only = 4 Overriding the alarms is defined with setting = 0 Main Switch 0/1/2/3/4 Low P0 0/1/2/3/4 AK-PC 781 Version 4.1x Menu operation RC8CE202 © Danfoss 03/2013... - Page 12 OFF: Controller stopped DI 1 Alarm delay m Time delay for the alarm "DI 1 Alarm" DI 2..Alarm delay m As above, but for the alarm functions 2 to 6 Menu operation RC8CE202 © Danfoss 03/2013 AK-PC 781 Version 4.1x...
- Page 13 Actual reference temp. for condenser capacity (incl. external contributions, if any) Cond. cap. % Cut-in condenser capacity in % (of total capacity) Request Cond. cap % Reference for condenser capacity AK-PC 781 Version 4.1x Menu operation RC8CE202 © Danfoss 03/2013...
- Page 14 Do not change the stated values. Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alternations can be made without subsequential changes being necessary in specifications already agreed.
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