Elmo Rietschle 2FC4...-1CB - Manual (Page 65)

Technical data 9
© Gardner Denver Deutschland GmbH 65 / 74 05.2014 · 610.00260.40.000
Designation Function
Analogue output 1 (voltage) - Short-circuit-proof
- Uoutput = 0..10V
- Imax = 10 mA
Voltage supply 24 V - Auxiliary voltage U = 24 V DC
- short-circuit-proof
- Imax = 100 mA
- external 24 V supply possible
Voltage supply 10 V - Auxiliary voltage U = 10 V DC
- short-circuit-proof
- Imax = 30 mA
*According to UL standard 508C, max. 2 A is permitted
Derating of output power
The drive controllers are equipped with two built-in PTC resistors (positive tem-
perature coefficient thermistors) that monitor both the cooling element as well as
the internal temperature. Once an allowable IGBT temperature of 95 °C or an al-
lowable internal temperature of 85 °C is exceeded, the drive controller switches
off.
Drive controllers in the power range 1.5 kW - 18.5 kW are designed for an over-
load of 150% for 60 s (every 10 minutes), the drive controller with rated power of
22 kW for an overload of 130% for 60 s (every 10 min.). For these conditions, re-
duction of the overload capacity or its time is to be taken into account:
▪ A clock frequency set permanently too high > 8 kHz (depending on load).
▪ A permanently increased cooling element temperature, caused by a blocked
air flow or a thermal block (dirty cooling ribs).
▪ Depending on the installation type, permanently too high ambient tempera-
ture.
The respective max. output values can be defined, based on the following charac-
teristic curves.
9.2