YOKOGAWA CENTUM CS, Technical Information

Page: 228 / 253

3. Cabling
3-130
TI 33J01J10-01EN
3.11 Alarm and Contact Output Cabling
IMPORTANT
To ensure this system compliance with the CSA safety standards, all devices connected to this
system shall be CSA certified devices.
n
Status Contact Output Connection
Each CENTUM VP device is provided with a terminal which makes contact output to external if a
power failure or processor failure is detected. The output contact rating of each device is shown
below.
Table Status Contact Output
Device Status Contact Output Contact Rating
AFV30S/AFV30D (19-inch Rock Mountable Type) Power and processor failure 30 V DC, 0.3 A
AFV40S/AFV40D (with Cabinet) Power and processor failure 250 V AC/30 V DC, 2 A, 125 VA
A2FV50S/A2FV50D Power and processor failure 30 V DC, 0.3 A
A2FV70S/A2FV70D Power and processor failure 30 V DC, 0.3 A
MHM/MHC Power 30 V DC, 0.3 A
ACB51 Fan failure 250 V AC/30 V DC, 2 A, 125 VA
ACUKT1 (with AFV30

) Power and processor failure
250 V AC/30 V DC, 2 A, 125 VA
ACUKT1 (without AFV30

) Power and processor failure
n
Use of Lamps
When you want to turn on lamps using contacts, use the following lamps:
• The rated voltage of lamp does not exceed the rated contact voltage.
• When using incandescent lamps, their rush current does not exceed the rated contact
current. It is considered to be 10 to 15 times the rated current. If the rush current exceed
the rated contact current, use a dim lamp resister or a rush current preventing resistor. It
is recommended to use a dim lamp resistor using 40 to 50 % of the lamp current rating, or
a rush current preventing resistor using 80 to 90 % of the lamp current rating. A dim lamp
resistor permits detection of lamp failure.
Be sure to test the lamp before installation.
F031101.ai
Rush current
preventing resistor
Contact
Lamp
Contact
Lamp
Check brightness when lighted. Check brightness when lighted.
Figure Examples of Using Lamps
Oct. 5, 2018-00