Danfoss AK-PC 781A pack controller for CO2 (R744) refrigeration racks with heat reclaim. Sequences up to ten compressors and eight condenser fans across up to eleven I/O extension modules, with floating condenser pressure, P0 optimisation, oil management, load shedding and heat recovery. PI capacity control. 24 V supply. EAN 5702428930550.
| Type | AK-PC 781A pack controller |
| Function | Pack with Heat Reclaim (CO2 / R744) |
| Capacity control mode | PI |
| Condenser control | Pressure / Temperature |
| Supply voltage | 24 V AC / 24 V DC |
| Power consumption | 8 VA |
| Frequency | 50/60 Hz |
| Compressors (max) | 10 pc |
| Fans (max) | 8 pc |
| Extension modules (max) | 11 pc |
| Analog inputs (AI) | 11 pc |
| Digital outputs (DO) | 8 pc |
| Enclosure rating | IP10 |
| Net weight | 0.645 kg |
| Gross weight | 0.95 kg |
| Approvals | C-TICK, CE, EAC, LLC CDC TYSK, cURus |
| Danfoss code | 080Z0191 |
| EAN | 5702428930550 |
| Product group | Compressor/condenser control |
| Addit. thermostats inputs max. | 5 pc |
| Addit.press.switche inputs max | 5 pc |
| Additional alarm inputs max. | 10 pc |
| Additional analog inputs max. | 5 pc |
| Analog inputs (AI) [pc] | 11 pc |
| Application area | Capacity control |
| Approval | C-TICK |
| Capacity control input | Pressure/ Temperature |
| CE mark | Yes |
| China RoHS compliance | Out of scope |
| Communication type | IO Extension |
| Compressor capacity mode | Step/ Speed |
| Condenser control type | Pressure/ Temperature |
| Controller type | Pack Controller |
| Digital outputs (DO) [pc] | 8 pc |
| Display - option | EKA 163B |
| Display on front | No |
| Division | 25 |
| Enclosure rating IP | IP10 |
| EU RoHS compliance | Out of scope |
| Fan capacity control | Step/ Speed |
| Fan control mode | PI |
| Frequency [Hz] | 50/60 Hz |
| Further information | Transcri.,Speed,CO2,HP,Oil,HR |
| I/O connectors max. | 120 pc |
| No.of compr. safty signals max | 6 pc |
| No.of extention modules max. | 11 pc |
| Number of Compressors max. | 10 pc |
| Number of fans max. | 8 pc |
| Oil management | Yes, with CO2 |
| Other RoHS documentation | EAEU RoHS |
| PFAS content [Yes/No] | No |
| Power consumption [VA] | 8 VA |
| Product features | CO2 compliant |
| Product Language | Chinese |
| Programming tools | AK-ST 500 |
| REACH Candidate List substances | Lead (CAS no. 7439-92-1) |
| Supply voltage [V] AC | 24 V |
| Supply voltage [V] DC | 24 V |
| UL mark | Yes |
| IP rating | IP10 |
| MOQ | 1 |
CO2 (R744) pack controller with heat reclaim for the Danfoss ADAP-KOOL AK2 platform. Replaces the discontinued AK-PC 781 (080Z0186). The AK-PC 781B (080Z0194) is the Ethernet/IP RJ45 build. Confirm rack size (≤10 compressors) and refrigerant before ordering.