Par. No. # Parameter description Default value 4 set-up Change duringoperationConver-sion indexType21-1* Ext. CL 1 Ref./Fb.21-10 Ext. 1 Ref./Feedback Unit [1] % All set-ups TRUE - Uint821-11 Ext. 1 Minimum Reference 0.000 ExtPID1Unit All set-ups TRUE -3 Int3221-12 Ext. 1 Maximum Reference 100.000 ExtPID1Unit All set-ups TRUE -3 Int3221-13 Ext. 1 Reference Source [0] No function All set-ups TRUE - Uint821-14 Ext. 1 Feedback Source [0] No function All set-ups TRUE - Uint821-15 Ext. 1 Setpoint 0.000 ExtPID1Unit All set-ups TRUE -3 Int3221-17 Ext. 1 Reference [Unit] 0.000 ExtPID1Unit All set-ups TRUE -3 Int3221-18 Ext. 1 Feedback [Unit] 0.000 ExtPID1Unit All set-ups TRUE -3 Int3221-19 Ext. 1 Output [%] 0 % All set-ups TRUE 0 Int3221-2* Ext. CL 1 PID21-20 Ext. 1 Normal/Inverse Control [0] Normal All set-ups TRUE - Uint821-21 Ext. 1 Proportional Gain 0.01 N/A All set-ups TRUE -2 Uint1621-22 Ext. 1 Integral Time 10,000.00 s All set-ups TRUE -2 Uint3221-23 Ext. 1 Differentiation Time 0.00 s All set-ups TRUE -2 Uint1621-24 Ext. 1 Dif. Gain Limit 5.0 N/A All set-ups TRUE -1 Uint1621-3* Ext. CL 2 Ref./Fb.21-30 Ext. 2 Ref./Feedback Unit [1] % All set-ups TRUE - Uint821-31 Ext. 2 Minimum Reference 0.000 ExtPID2Unit All set-ups TRUE -3 Int3221-32 Ext. 2 Maximum Reference 100.000 ExtPID2Unit All set-ups TRUE -3 Int3221-33 Ext. 2 Reference Source [0] No function All set-ups TRUE - Uint821-34 Ext. 2 Feedback Source [0] No function All set-ups TRUE - Uint821-35 Ext. 2 Setpoint 0.000 ExtPID2Unit All set-ups TRUE -3 Int3221-37 Ext. 2 Reference [Unit] 0.000 ExtPID2Unit All set-ups TRUE -3 Int3221-38 Ext. 2 Feedback [Unit] 0.000 ExtPID2Unit All set-ups TRUE -3 Int3221-39 Ext. 2 Output [%] 0 % All set-ups TRUE 0 Int3221-4* Ext. CL 2 PID21-40 Ext. 2 Normal/Inverse Control [0] Normal All set-ups TRUE - Uint821-41 Ext. 2 Proportional Gain 0.01 N/A All set-ups TRUE -2 Uint1621-42 Ext. 2 Integral Time 10,000.00 s All set-ups TRUE -2 Uint3221-43 Ext. 2 Differentiation Time 0.00 s All set-ups TRUE -2 Uint1621-44 Ext. 2 Dif. Gain Limit 5.0 N/A All set-ups TRUE -1 Uint1621-5* Ext. CL 3 Ref./Fb.21-50 Ext. 3 Ref./Feedback Unit [1] % All set-ups TRUE - Uint821-51 Ext. 3 Minimum Reference 0.000 ExtPID3Unit All set-ups TRUE -3 Int3221-52 Ext. 3 Maximum Reference 100.000 ExtPID3Unit All set-ups TRUE -3 Int3221-53 Ext. 3 Reference Source [0] No function All set-ups TRUE - Uint821-54 Ext. 3 Feedback Source [0] No function All set-ups TRUE - Uint821-55 Ext. 3 Setpoint 0.000 ExtPID3Unit All set-ups TRUE -3 Int3221-57 Ext. 3 Reference [Unit] 0.000 ExtPID3Unit All set-ups TRUE -3 Int3221-58 Ext. 3 Feedback [Unit] 0.000 ExtPID3Unit All set-ups TRUE -3 Int3221-59 Ext. 3 Output [%] 0 % All set-ups TRUE 0 Int326.2.18. 21-** Ext. Closed-loop6. How to program the adjustable frequencydrive VLT® HVAC Drive Instruction Manual122 MG.11.A4.22 - VLT® is a registered Danfoss trademark6