Lenze SX-1 User Manual

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5,4 Protective Measures and lnterference (Nolse) Avoidance
All lnputs and Outputs of the SX-1 <excepting the Analog Input and Output) are isolated
from the internal bus. For added security, you must take the following precautions:
5.4.1 Encoder Cable
The cable should be in shielded and twisted pairs for eaCh Channel, and of sufficient Cross
section to avoid voltage drops. Maximum length is 50 m.
The encoder should idealJy be installed electrically isolated from the machine, so that the
shields can be connected to both the SX-1 and the Encoder case. With non-isolated
Encoder mounting, connect the shields only at the SX-1 end.
Use only the cables recommended by the supplier.
5.4.2 Inputs and Outputs
A common shield shou!d be provided for all inputs and outputs, the shield being grounded
at one end only.
5.4.3 Analog Output (Reference Signal) and Analog Input (Override)
These should be connected by shielded cable to the drive control.
5.4.4 Main Power Supply
AC 110/220 Volt +10% -15 0/; 50/60 Hz; max. 30 VA.
Supplies with heavy interference must be externally filtered, for example using an
isolating transformer and/or voltage stabilizer.
5.4.5 External 24 V DC Supply
This supply has no special requirements such as stabilization: however, it should incor -
porate a suitable filter capacitor. The voltage must not drop below 20 V or rise above
33 V. High frequency noise should be avoided.
5.4.6 General Rules
lnductive loads, such as the coils of relays, contactors and solenoid valves, should be
suppressed using fast-recovery diodes or RC filters.
Pay attention to slowly-opening contacts in thermostat valves.
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Lanze

Lenze SX-1 Specifications

General

Brand	Lenze
Model	SX-1
Category	Industrial Equipment
Language	English