Wiring The Brake Resistor Temperature Switch; Selecting The Voltage/Current Input Signal - Danfoss VLT HVAC Drive FC 102 Operating Manual

Operating Guide | VLT® HVAC Drive FC 102
• U /[V]: 690
i
• U /[kV]: 4
imp
• Pollution degree: 3
• I /[A]: 16
th
• Cable size: 1...2x18...14 AWG (0.75...2.5 mm
• Maximum fuse: 16 A/gG
• NEMA: A600, R300, wire size: 18–14 AWG (0.75–2.5 mm

5.11.12 Wiring the Brake Resistor Temperature Switch

Context:
The brake resistor terminal block is on the power card and allows for the connection of an external brake resistor temperature switch.
The switch can be configured as normally closed or normally open. If the input changes, a signal trips the drive and shows alarm 27,
Brake chopper fault on the LCP display. At the same time, the drive stops braking and the motor coasts.
1. Locate the brake resistor terminal block (terminals 104–106) on the power card. See the Wiring Schematic section.
2. Remove the M3 screws that hold the jumper to the power card.
3. Remove the jumper and wire the brake resistor temperature switch in 1 of the following configurations:
Normally closed. Connect to terminals 104 and 106.
Normally open. Connect to terminals 104 and 105.
4. Secure the switch wires with the M3 screws. Torque to 0.5–0.6 Nm (5 in-lb).

5.11.13 Selecting the Voltage/Current Input Signal

Context:
The analog input terminals 53 and 54 allow setting of input signal to voltage (0–10 V) or current (0/4–20 mA).
• Terminal 53: Speed reference signal in open loop (see parameter 16-61 Terminal 53 Switch Setting).
• Terminal 54: Feedback signal in closed loop (see parameter 16-63 Terminal 54 Switch Setting).
Procedure
1. Disconnect power to the drive.
2. Remove the LCP (local control panel). See the Local Control Panel (LCP) section.
3. Remove any optional equipment covering the switches.
4. Set switches A53 and A54 to select the signal type (U = voltage, I = current). See
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Electrical Installation
illustration 38.
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