Fuses; Branch Circuit Protection - Trane TR200 Instruction Manual

Very long control cables and analog signals may, in rare cases and depending on installation, result in 50/60 Hz
earth loops due to noise from mains supply cables.
If this occurs, break the screen or insert a 100 nF capacitor between screen and chassis.
The common of digital / analog inputs and outputs should be connected to separate common terminals 20, 39, and 55.
This will avoid ground current interference among groups. For example, it avoids switching on digital inputs disturbing
analog inputs.
Control cables must be screened/armoured.

Fuses

Branch Circuit Protection

WARNING
In order to protect the installation against electrical and fire hazard, all branch circuits in an installation, switch gear,
machines etc., must be short-circuit and over-current protected according to NEC and your local/state code.
Failure to follow recommendations could result in death or serious injury.
Short-circuit protection:
The frequency converter must be protected against short-circuit to avoid electrical or fire hazard. Trane recommends
using the fuses mentioned below to protect service personnel and equipment in case of an internal failure in the drive.
The frequency converter provides full short-circuit protection in case of a short-circuit on the motor output.
WARNING
Overcurrent protection:
Provide overload protection to avoid fire hazard due to overheating of the cables in the installation. Fuses or circuit
breakers can be used to provide the over-current protection in the installation. Over-current protection must always be
carried out according to NEC and your local/state code.
NOTE
Note Fusing not in UL compliance
If UL/cUL is not to be complied with, Trane recommends using the fuses mentioned in the table below, which will
ensure compliance with EN50178.
In case of malfunction, not following the recommendation may result in unnecessary damage to the frequency con-
verter.
BAS-SVX19C-EN
Electrical Installation
4-7