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Danfoss VLT HVAC Basic Drive Instruction

Cascade controller
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Download this manual See also: Programming Manual, Instruction Manual
MAKING MODERN LIVING POSSIBLE
Instruction
®
VLT
HVAC Basic Drive
Cascade Controller

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Summary of Contents for Danfoss VLT HVAC Basic Drive

  • Page 1 MAKING MODERN LIVING POSSIBLE Instruction ® HVAC Basic Drive Cascade Controller...

  • Page 3: Cascade Controller

    The alternation of the lead pump can take place at a command signal or at staging (adding lag pump). ® MI18I302 - VLT is a registered Danfoss trademark...

  • Page 4: System Status And Operation

    25-04 Pump *[0] Disabled *[0] Disabled Select the Cycling [1] Enabled method for the variable determining the speed pump. order of cutting in/out the fixed speed pumps. ® MI18I302 - VLT is a registered Danfoss trademark...
  • Page 5 Mode at [1] Quick minimum speed, Alternation a fixed speed 25-57 Relays The number of pump is per Pump relays used per destaged when pump. the programmed time expires. ® MI18I302 - VLT is a registered Danfoss trademark...
  • Page 6 53 or 54 and 55) make the frequency converter run. 0/4-20mA A OUT / DIG OUT 0/4-20mA A OUT / DIG OUT 12 20 55 COM A IN COM DIG IN Illustration 1.3 Control Terminals ® MI18I302 - VLT is a registered Danfoss trademark...

  • Page 7: Electrical Overview

    61 on 116,117 and 118 unites 24V (NPN) OV (PNP) (PNP)-Source (NPN)-Sink Illustration 1.4 Electrical Overview NOTE There is no access to UDC- and UDC+ on the following units: IP20 380-480 V, 30-90 kW ® MI18I302 - VLT is a registered Danfoss trademark...
  • Page 8 Table 1.4 Frequency Converter P15K P18K P22K P30K P37K P45K P55K P75K P90K Typical shaft output [kW] IP20 Frame RFI Class Coated Coated Coated Coated Coated Coated Coated Coated Coated Table 1.5 ® MI18I302 - VLT is a registered Danfoss trademark...
  • Page 9 ® VLT® HVAC Basic Drive Casca... HVAC Basic Drive Cascade Controller ® MI18I302 - VLT is a registered Danfoss trademark...
  • Page 10 ® VLT® HVAC Basic Drive Casca... HVAC Basic Drive Cascade Controller ® MI18I302 - VLT is a registered Danfoss trademark...
  • Page 11 130R0267 MI18I302 Rev. 2012-08-31 *MI18I302*...