OPERATION INSTRUCTIONS DANFOSS ENG

ManualsBrandsSystemair ManualsElectrical accessories VentilationFC102-37,0kW/73A-IP55, 150/50m - frequency converter, 380-480V, 37kW, 73A, IP55

4.8.4 Voltage/Current Input Selection

(Switches)

The analog input terminals 53 and 54 allow setting of

input signal to voltage (0–10 V) or current (0/4–20 mA).

Default parameter settings:

•

Terminal 53: speed reference signal in open-loop

(see 16-61 Terminal 53 Switch Setting).

•

Terminal 54: feedback signal in closed-loop (see

16-63 Terminal 54 Switch Setting).

NOTICE!

Disconnect power to the adjustable frequency drive

before changing switch positions.

Remove the local control panel (see Figure 4.14).

2. Remove any optional equipment covering the

switches.

3. Set switches A53 and A54 to select the signal

type. U selects voltage, I selects current.

130BD530.10

N O

VLT

BUSTER.

OFF-ON

A53 A54

U- I U- I

Figure 4.14 Location of Terminals 53 and 54 Switches

4.8.5

Safe Torque Off (STO)

Safe Torque off is an option. To run Safe Torque Off,

additional wiring for the adjustable frequency drive is

required. Refer to the Safe Torque Off Instruction Manual for

further information.

4.8.6 RS-485 Serial Communication

Up to 32 nodes can be connected as a bus, or via drop

cables from a common trunk line to one network segment.

Repeaters can divide network segments. Each repeater

functions as a node within the segment in which it is

installed. Each node connected within a given network

must have a unique node address across all segments.

•

Connect RS-485 serial communication wiring to

terminals (+) 68 and (-) 69.

•

Terminate each segment at both ends, using

either the termination switch (bus term on/off,

see Figure 4.14) on the adjustable frequency

drives, or a biased termination resistor network.

•

Connect a large surface of the shield to ground,

for example with a cable clamp or a conductive

cable connector.

•

Apply potential-equalizing cables to maintain the

same ground potential throughout the network.

•

Use the same type of cable throughout the entire

network to prevent impedance mismatch.

Cable

Shielded twisted pair (STP)

Impedance

120 Ω

Max. cable

length (ft [m])

4,000 ft [1,200 m] (including drop lines)

1,650 ft [500 m] station-to-station

Table 4.3 Cable Information

Electrical Installation Instruction Manual