Installing the optional modules
5.4 Slotted initiator alarm unit
SIPART PS2 with PROFIBUS communication
Operating Instructions, 09/2007, A5E00127926-07
65
8.
Place the insulating cover on the SIA unit by bending the container walls carefully.
9.
Engage the motherboard into the four brackets.
10.
Fix the motherboard using both the fixing screws.
11.
Reestablish all electrical connections between the motherboard and the optional
modules. Connect the motherboard and the optional modules to the ribbon cables
provided. Connect the motherboard and the potentiometer to the potentiometer cable.
12.
Using both the screws, fasten the module cover provided. Do not use the standard
module cover.
13.
Select the signs that already exist on the standard version of the module cover from the
sign set provided. Affix the selected signs on the installed module cover as per the
standard version.
14.
Establish all electrical connections.
5.4.3
Setting the limits of the slotted initiator alarm unit
Determining the switch status of slotted initiators
You will require a suitable display device to determine the switch status. For example, use
the initiator tester type 2 / Ex by P Fuchs.
1.
Connect the display device to the following terminals of the SIA unit:
–
41 and 42
–
51 and 52
2.
Read the switch status of slotted initiators.
Setting the L1 and L2 limits
Proceed as follows to set the limits:
1.
Move the actuator to the first desired mechanical position.
2.
Adjust the upper actuating disc manually until the output signal at terminals 41 and 42
changes. Set a high-low or a low-high switchover as follows:
–
Rotate the actuating disc beyond the switching point until you reach the next switching
point.
3.
Move the actuator to the second desired mechanical position.
4.
Adjust the lower actuating disc manually until the output signal at terminals 51 and 52
changes. Set a high-low or a low-high switchover as follows:
–
Rotate the actuating disc beyond the switching point until you reach the next switching
point.
