Burkert 8681 - Safety Instructions (120 V AC)

49
120VAC - Design
Example 2:
3valveshavebeenactivatedsimultaneously,onepositionisreported(persistentstate):
P
Total
= P
El
+ 3 x P
Valve
+ 1 x P
LED
7.0 VA = 1.2 VA + 3 x 1.4 VA + 1 x 1.6 VA
or
I
Total
= I
El
+ 3 x I
Valve
+ 1 x I
LED
59 mA = 10 mA + 3 x 12 mA + 1 x 13 mA
Whenusinganexternalinitiator,itspowerrequirementshouldbeadded.
11.4 Safety instructions
DANGER!
Risk of injury due to electric shock (110 ... 130 V AC)!
` Beforereachingintothesystem(exceptfortheTeachprocedureinanon-explosiveatmosphere)switch
othepowersupplyandsecureittopreventrestarting!
` Observeapplicableaccidentpreventionandsafetyregulationsforelectricalequipment!
` Whensettingthepositionmeasuringsystem(Teachprocedure),donotcontactanylivecomponents!
Risk of electric shock if the PE connection is not connected!
` the PE connection must be connected!
Danger of explosion in a potentially explosive atmosphere (only in the event of a fault as zone 2)!
` Opening the hood or the housing in a potentially explosive atmosphere is only allowed in a not ener-
gised state!
WARNING!
Risk of injury from improper installation!
` Installation may be carried out by trained technicians only and with the appropriate tools!
Risk of injury from unintentional activation of the system and uncontrolled restart!
` Secure system against unintentional activation.
` Following installation, ensure a controlled restart.
english
Control Head Type 8681