USER MANUAL 1.2 | B-FORTIS CC-PRIME SERIES
Berghof Automation GmbH | Arbachtalstrasse 26 | 72800 Eningen | www.berghof-automation.com
47
Special feature S08
In this variant the two terminating resistors (681
Ω) are not installed. This allows the multimaster
operation of multiple ECC22X2-modules. In this case the bus has to be terminated externally.
In addition pin 7 is assigned with 5 V DC with a maximum load of 50 mA. This voltage source is
supplied via an “isolated “ 5 V DC of the interface and is not protected against overvoltage or
short circuit. It is used only to power external polarisation modules on the bus.
WARNING
Serious injury as a result of uncontrolled and unpredictable operational sequences!
Incorrect wiring may lead to failure or destruction of the controller.
Make sure that the load on the voltage source of 5 V DC on pin 7 of the variant ECC22X2
never exceeds 50 mA.
Avoid an external supply