Installation and Connection
page 31
rev. 00 / 12.04.2017
15.1.4 Relays
The reliability of the switching contact deteriorates if the minimum switching current is lower
than specified.
F
c
Observe the connection and switching specifications of the relays (see chapter „10
Specifications“).
WARNING
Danger from electrical current – Measures to prevent accidental contacts
Contact protection according to the requirements as specified in EN 61010-1:2010 is not
guaranteed in the event of relay voltages > 150 V due to the testing pin terminal of the relay
clamp blocks.
Take all necessary protection against electrical shock according to the laws and regulations!
For example: Open the cabinet/field enclosure only by the use of a tool or key,
or use fault-current circuit breaker or similar.
Non-observance may result in personal injuries.
WARNING
Danger from electrical current – Protect Relay Contacts
The relay contacts of the instrument shall be protected using 6 A slow-blow fuses as soon
as voltages in the low voltage range (such as AC supply voltages) are to be switched via the
instrument’s relay contacts. Moreover these contacts shall be designed so as to be switched
off independent from other circuit parts. DC units shall be equipped with an appropriate
protective earth conductor in order to avoid dangerous voltages or currents.
Non-observance may result in personal injuries.
