14
Terminal Terminal Function Description
Power Circuits
L, N Power supply input to inverter Single phase AC power supply.
L1, L2, L3 Power supply input to inverter Three phase AC power supply.
U, V, W Power output to 3-phase motor
(+), P1 DC reactor Optional. Improves p.f. and reduces harmonics.
(+), DB External dynamic braking resistor Optional (DB not available for VXS20-1).
Earth terminal WARNING! Inverter must be earthed.
Frequency Input Reference
11 Common 0V For terminals 12, 13, C1 and FMA.
12 Reference input voltage 0 to +10V DC = 0Hz to max. freq. Z = 22kΩ.
13 Pot. (1kΩ, 1W) power supply +10V DC power supply; max output 10mA.
C1 Reference input current 4 to 20mA DC = 0Hz to max. freq. Z = 250Ω.
Control Inputs
FWD RUN/STOP command — forward -P24 closed = RUN forward; open = decel. & stop.
REV RUN/STOP command — reverse -P24 closed = RUN reverse; open = decel. & stop.
BX Coast-to-stop command -P24 closed = coast to stop.
THR External fault/alarm trip command -P24 open = OH2 trip and coast.
RST Reset inverter after protective trip -P24 closed momentarily (>0.1s) = reset.
X1, X2 ‘Motorised pot.’
X1-P24 closed = accel. time 1 (Function 06).
X2-P24 open = decel. time 1 (Function 07).
X1, X2, X3 Preset frequency select Terminals enable 7 different frequencies to be preset.
X4 Auxiliary control input Four functions according to data set in Function 43:
When F43 = 0, X4-P24 closed selects accel/decel time 2 (Functions 63 and 64).
When F43 = 1, X4 functions as a fourth signal, allowing 15 preset frequencies.
When F43 = 2, X4-P24 closed selects base frequency 2 (Function 62).
When F43 = 3, X4 functions as a ‘hold’ (HLD) signal for 3-wire operation.
Control power supply (two) Internal 24V DC supply. Capacity is adequate to
P24 CAUTION Do not short circuit support all input control circuits plus Y1E output
to either terminal 11 or CM . provided that the load at Y1E is not >50mA.
CM* Common terminals (two) Common for FMP, Y1E and external control contacts.
Monitor Outputs
0 to 10V DC 1mA max. output, proportional to
the value of four parameters (refer to Functions
FMA Analog monitor 09, 40 and 41):
Output frequency; output current;
calculated torque %; load factor %.
FMP Output frequency monitor (pulse)
O/P pulse rate = O/P frequency x Function 42.
O/P voltage = 15V peak-to-peak.
* The two terminals CM are at the same potential as terminal 11.
5.4 Terminals Functions List
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