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Siemens SED2 Variable Frequency Drives

Variable Frequency Drives

The SED2 Variable Frequency Drives are designed specifically for HVAC applications. The SED2 supports a wide variety of digital and analog I/O for diverse control capability. Built-in PID features control pumps and fans, and an integral system protocol can interface P1/N2 networks. Using the SED2 multi-level parameter access, operators can quickly pinpoint relevant data.

• Built-in SBT P1 and JCI N2 (Metasys®) building automation system protocols for easy network integration
• LON, Modbus RTU and BACnet MS/TP Interfaces optional
• Low harmonics design reduces noises and interference eliminates need for filters/reactors in most installations
• Built-in PID for fast and accurate pressure control
• Pump staging for open loop, constant pressure, and constant flow-type applications
• Multi-level program access
• Belt failure detection with or without an external sensor
• Service mode for applications requiring continuous, uninterruptible operation
• Accepts a wide variety of digital and analog I/O types, including direct Siemens Ni 1000 RTD sensor level inputs
• One common interface throughout all power ranges
• Optional Advanced Operator Panel for uploading/ downloading parameters
• Full form C relay contacts for digital outputs

F-6 Input Voltage and Power Ranges (3 phase)
208V and 230V to 240V, 3 ac±10% 1/2 hp to 60 hp
380V to 480V, 3 ac ±10% 1/2 hp to 125 hp
500V to 600V, 3 ac ±10% 1 hp to 125 hp
Input Frequency 47 Hz to 63 Hz
Output Frequency 0 Hz to 150 Hz
Power Factor ≥0.9
VFD degree of efficiency 96% to 97%
Switch-on Current Less than nominal input current
Auxiliary Supply 24V Glavanically separated, unregulated auxiliary supply (18V to 32V) 100 mA
Overload Capacity 110% for 60 seconds
Control Method Linear, parabolic and programmable V/f;
and flux current control low-power mode
PWM Frequency 2k Hz to 16k Hz (adjustable in 2k Hz increments)
Fixed Frequencies 15 programmable
Skip Frequency Bands 4 programmable
Setpoint Resolution 0.01 Hz digital
0.01 Hz serial
10 bit analog
Digital Inputs (Sink/Source) 6: fully programmable and scalable isolated digital inputs, switchable
Analog Inputs 2: 0 to 10 Vdc, 0/4 to 20 mA, can also be configured as digital inputs or Ni 1000 input
Relay Outputs 2: configurable 30 Vdc/5A (resistive),
250 Vac/2A (inductive)
Analog Outputs 2: programmable (0/4 mA to 20 mA,
or 0 Vdc to 10 Vdc)
Serial Interface RS-485 transmission rate:
Up to 38.4k Baud Protocols: USS, P1 and N2
Protection Level IP20
NEMA Type 1 with protective shield and gland plate installed
IP54/NEMA Type 12
Temperature Ranges Operating: 14°F to 104°F (–10°C to 40°C)
Storage: –40°F to 158°F (–40°C to 70°C)
Humidity 95% rh, non-condensing
Operational Altitudes Up to 3280 ft (1000m) above sea level without derating
Protection Features Under-voltage, Over-voltage, Overload,
Ground fault, Short circuit, Stall prevention,
Locked motor, Motor over-temperature l2 t PTC,
Over-temperature, Parameter PIN protection.
Standards UL, cUL, CE, C-tick
CE Conformity Conformity with EC Low Voltage Directive 73/23/EEC
Options LON Interface, Modbus RTU Interface,
BACnet MS/TP Interface, Advanced Operator Panel
(AOP) Module, EasyComm Drive Software, PC Kit

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