350   Technical data
Control connection data
Analog inputs X1A: 2 
and 5
Voltage signal, unipolar 0 (2)…10 V, R
in
 > 312 kohm
bipolar -10…10 V, R
in
 > 312 kohm
Current signal, unipolar 0 (4)…20 mA, R
in
 = 100 ohm
bipolar -20…20 mA, R
in
 = 100 ohm
Potentiometer reference 
value (X1A: 4) 10 V ± 1%, max. 10 mA, R < 10 kohm
Resolution  0.1%
Accuracy  ±1%
Analog output X1A: 7   0 (4)…20 mA, load < 500 ohm
Auxiliary voltage X1A: 9   24 V DC ± 10%, max. 200 mA
Digital inputs X1A: 
12…16
(frequency input X1A: 
16)
Voltage   12…24 V DC with internal or external 
supply
Type PNP and NPN
Frequency input Pulse train 0…16 kHz (X1A: 16 only)
Input impedance   2.4 kohm
Relay output X1B: 
17…19
Type NO + NC
Max. switching voltage 250 V AC / 30 V DC
Max. switching current  0.5 A / 30 V DC; 5 A / 230 V AC
Max. continuous current  2 A rms
Digital output X1B: 
20…21
Type Transistor output PNP
Max. switching voltage 30 V DC
Max. switching current  100 mA / 30 V DC, short-circuit 
protected
Frequency  10 Hz …16 kHz
Resolution  1 Hz
Accuracy  0.2%
EIA-485 interface X1C: 
23…26
Cable Shielded twisted pair, impedance 
100…150 ohm
Termination Daisy-chained bus, without drop lines
Isolation Bus interface isolated from the drive
Transfer rate   1.2…76.8 kbit/s
Communication type  Serial, asynchronous, half duplex
Protocol Modbus
Clearance and creepage distance
The clearance and creepage distance between I/O connections and 
mains circuit is 5.5 mm, which guarantees safety insulation of 
overvoltage category 3 (IEC 60664-1).
 
Efficiency
Approximately 95 to 98% at nominal power level, depending on the 
drive size and options
 
Degrees of protection
IP20 (cabinet installation) / UL open: Standard enclosure. The drive 
must be installed in a cabinet to fulfil the requirements for shielding 
from contact.
IP20 / NEMA 1: Achieved with an option kit including a hood and a 
connection box.