Calex 8501 pdf series#

The two outputs have a common emmiter with each output collector capable of sinking a minimum of 5mA. The inputs are isolated by optocouplers and are protected from ESD by varistors. The input frequency range is DC to 20KHz. The output is an optocoupler NPN transistor collector and requires the 5 Volt logic supply and its return. Each channel requires 7mA into 2.5K ohms to provide a 5mA sinking output to TTL 5 Volt logic. The Model 8502 is a two channel 24V to 5V converter. The input frequency for the 8501 is DC to 15KHz. The output is a floating optocoupler NPN transistor which may be connected in either source or sink configurations. Note that low power TTL logic will not drive this unit.

Calex 8501 pdf series#

They may be driven by standard TTL logic, H series TTL logic or with an open collector NPN transistor. The two independent channels require 7mA into 382 ohms to provide a 7mA output into the 3K, 24 Volt typical PLC logic input. The Model 8501 is a two channel 5V to 24V converter. An example would be the direction and step control of a Stepper Motor by Programmable Logic Controller 24 Volt high speed outputs where the motor controller requires 5 Volt logic signal levels. The 8501 or 8502 is extremely useful where only one signal type is available. Each Model contains two independent channels which accept a TTL or 24V pulse signal and convert that signal to a 24V pulse or TTL output respectively. of Concord, California announces the availability of the Models 85. Original Press Release: Two Channel TTL to 24V & 24V to TTL ConvertersĬalex Mfg. Model 8502 two-channel 24 to 5 V converter requires 7 mA into 2.5 Kohm per channel to provide 5 mA sinking output to TTL 5 V logic. They may be driven by TTL logic, H series TTL logic, or with open collector NPN transistor.

Model 8501 two-channel 5 to 24 V converter requires 7 mA into 382 ohms per channel to provide 7 mA output into the 3 Kohm, 24 V typical PLC logic input.