Bitzer VARIPACK FD+6 Instructions De Service page 19

– Max. input current: < 25 mA (current signal)
– Max. input voltage: ± 24 V DC (voltage signal)
– Input impedance:
Voltage range: 22 kΩ
Current range: 120 Ω
Digital outputs
• Function
– X12: 4: DO3 (Comp. 2)
External control: without function.
With extension module: Start of the 2nd com-
pressor.
• Technical data
– Output signal: 24 V DC (minimum 21 V DC)
– Max. output current: 140 mA.
(The maximum available total current is 140 mA,
either individually or as the sum of digital outputs
and the + 24 V DC power supply on the user
side).
Analogue outputs
• Function
– X11: 3: AO1 (Fan)
External control: without function.
With extension module: control signal for con-
denser fan 0 .. 10 V.
– X11: 4: AO2
Reserve.
• Technical data
– Output signal: 0 .. 10 V.
– Max. output current: 10 mA, with short-circuit pro-
tection.
– Output impedance: Voltage range ≥ 1 kΩ.
Relays
• Function
– X14: 1: Relay 1A ￫ X14: 2: Relay 1B
Compressor is ready to operate.
– X14: 3: Relay 2A ￫ X14: 4: Relay 2B
Compressor is running (factory setting) or no error
can be configured via the parameter logic of out-
put DO1.
CB-100-2
• Technical data
– Potential-free relay.
– Switching current range: 1 mA to max. 3 A of res-
istive load
– Switching voltage range: 5 V AC to max.
250 V AC or 30 V DC
– Protection against inductive or capacitive loads
must be provided by external measures.
Information
The STO inputs must be activated to allow the
compressor to start!
STO (input circuit)
• Function (see chapter Safe Torque Off (STO), page
24)
– X10: 1: Input A and X10: 3: Input B.
STO inputs (Safe Off Torque).
Inputs must be switched simultaneously.
– X10: 2: Common and X10: 4: Common.
Terminals are connected internally. Thus, only
one cable core is required.
• Technical data
Typical input current at 24 V: 9 mA
– Status:
Off (recommended): 0 .. 5 V DC
Undefined: 5 .. 21,6 V DC
On (recommended): 21.6 .. 26.4 V DC
– Max. input voltage: ± 30 V DC
STO status
• Function (see chapter Safe Torque Off (STO), page
24)
– X10: 5 status A ￫ X10: 6: Status B
This output is active (closed), if the STO circuit is
in the safe state, i.e., if the FI does not allow the
motor to produce a torque.
• Technical data
– Potential-free semiconductor relay.
– Max. voltage: ± 30 V.
– Max. output current: 150 mA.
– Thermal overload protection integrated.
– Resistance between the output terminals: < 6 Ω.
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