Pu1756-L65  1756-L65  1756-L65 

blication 1747-UM011G-EN-P - June 2008
Special Considerations The recommendations given previously provide favorable operating 
conditions for most controller installations. Some applications may 
involve adverse conditions, such asexcessive line voltage variations 
and/of excessive noise, as described below. Additional measures can 
be taken to minimize the effect of these conditions.
Class I, Division 2 Applications
Excessive Line Voltage Variations
The best solution for excessive line voltage variation is to correct any 
feeder problems in your distribution system. Where this does not 
solve the line variation problem, or incertain critical applications, use 
a constant voltage transformer. If you require a constant voltage 
transformer, connect it to the power supply andall input devices 
connected to the SLC 500 controller.
Connect output devices on the same power line, but their connection 
along the power line is normally made before the constant voltage 
transformer. A constant voltage transformer must have a sufficient 
power rating for its load.
Excessive Noise
When operating the SLC 500 controller in an environment with a high 
amount of electrical noise, give special consideration to the possibility 
of electrical interference.
The following reduces the effect of electrical interference.
•SLC 500 controller design features
•Proper mounting of controller within an enclosure
•Proper equipment grounding
•Proper routing of wires (power, communication, control lines)
•Proper suppression added to noise generating devices
Potential sources of noise include inductive loads, such as relays, 
solenoids, and motor starters whenoperated by hard contacts like 
push buttons or selector switches. Suppression may be necessary 
IMPORTANT
When installing peripheral devices (for example, push buttons, 
lamps) into a hazardous environment, ensure that they are Class 
I, Division 2 certified, or determined to be safe for the 
environment.Siemens Sinumerik 6FC5103-0AC02-0AA1 6FC5 103-0AC02-0AA1
Siemens Sinumerik 6FC5103-0AD03-0AA0
Siemens Sinumerik 6FC5357-0BB33-0AE1
Siemens Sinumerik 6FX2007-1AE03
Siemens Simodrive 6SN1118-0DH23-0AA0
Siemens Sinumerik 6FC5203-0AB11-0AA1
Simatic 6AV3535-1TA01-0AX0
Siemens Sinumerik 6FC5403-0AA20-1AA0
SIEMENS Simodrive 6SC6108-0SG01
Siemens Simodrive 611 6SN1151-1FX10-1AB0
Siemens Simadyn 6DD1606-2AC0
Siemens Simatic 6ES5948-3UA13 6ES5 948-3UA13
Siemens Simadyn 6DC1601-0AD1
Siemens Simodrive 6SN1118-0AA11-0AA1
Siemens Sinumerik 6FX1142-4BA02
Siemens 6FM1470-3CA25
Siemens Simadyn 6EW1810-3AA 
Siemens Simatic 6ES5242-1AA41 6ES5 242-1AA41
Siemens Sinumerik 6FC5357-0BB23-0AE0
Bosch Servo Modul ASM 10-TD Nr. 1070077516-108
Bosch Servo Modul SM 10/20-TA Nr.055128 - 112
Bosch Servodyn SPM 25-T/A Nr. 052313-114
Bosch SM 15/30-TC Servomodul 060841-202
Bosch Servodyn Controller SM 10/20-TC 060840-204
Bosch Servo Modul SM 10/20-TC Nr. 060840-204
Bosch SM 15/30-TC Servomodul 060841-204
Bosch Servo Modul SM 10/20-TC Nr. 060840-206
Bosch Servo Modul SM 17/35-TS02 Nr. 1070077383-106
Bosch Rexroth Servodyn SM 50/100-T 047826-322

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