Lamtec F300K Series, Руководство пользователя

Страница: 29 / 126

28
6 Commissioning
6.1.2 Electrical Safety – Requirements to Be Met by Third-party Manufacturers
DANGER!
Supply voltage
The device's supply voltage may only be generated by means of a safety power supply unit of
a different make from the one described in the accessories if safety extra-low voltage is used
(e.g. to EN 61558-2-6 "Safety of transformers" or EN 60950-1 "Information technology equip-
ment – Safety".
DANGER!
"Flame signal" and "ready" relay contact outputs
The potential-free contact connections of the device's relays may only be wired with safety ex-
tra-low voltage in accordance with the requirements for supply voltage.
DANGER!
"Mode selector" digital inputs
The digital inputs are controlled only via potential-free contacts.
DANGER!
Communication interfaces
The equipment of other manufacturers connected to the communication interfaces must meet
the requirements of DIN EN 60950-1 "Information technology equipment – Safety".
DANGER!
Analogue output current loop - Protection against electric shock
Measuring circuits must be separated safely to dangerous active parts according to EN 61140
„Protection against electric shock …“.

You achieve this by double or reinforced isolation according to EN 61010-1 „Safety re-
quirements for electrical equipment for measurement, control and laboratory use“.
WARNING!
Radio interference suppression of the output contacts
In the interests of safety, ensure when installing the output contacts that:

The user suppresses radio interference in such a way that the contacts of the safety relay
contact output cannot be shorted by defective components of the suppressor circuitry.