MSCDN – MP2A Commissioning
7 Programming The Relay
The relay can either be set using the fascia buttons or from a laptop PC running Reydisp Evolution. Due to the
number of possible settings, it is recommended that the laptop method be used for speed and ease of
commissioning.
7.1 Setting by laptop
The relay is supplied with an RS232 port on the front of the fascia. This should be connected to a laptop using
a 25 to 9 way RS232 cable. Reydisp Evolution should be installed – this will run on any MS Windows ©
operating system.
To access the relay communications port the Communications Settings in the relays must match the settings
Communications settings selected in the Reydisp Evolution software.
To change the communications settings on the relay use the following procedure. On the relay fascia, keep
tapping the
Ø
key until the COMMUNICATIONS MENU is displayed on the relay LCD. Press the
TEST/RESET
Ö
once to bring up the STATION ADDRESS on the LCD. Press the ENTER button to alter the
address to any desired number between 1 and 254. Set each relay to a unique number in the substation. The
relays address and the relay address must be set identically. The relay address can be changed by tapping
the
Ø
or
×
buttons. Press ENTER to register the selected number.
Continue to scroll down and set IEC 870 ON PORT to COM2 (front RS232 and bottom rear fibre ports are
COMM 3 relay ports) and set AUTO DETECT to ON. The Auto Detect feature will automatically switch the
active port to the front RS232 from the bottom rear fibre port when connection is made.
Ensure that the Communications baud rate and parity check settings on the Reydisp Evolution software
running on laptop and Relay are the same. It is advisable to select the maximum baud rate on the relay and
Reydisp Evolution, as this speeds up response times.
The communications setting can be changed in Reydisp Evolution by selecting:
OPTIONS -> COMMUNICATIONS. This window displays the active part of the laptop. Select “ OK” when
changes are complete. Set the address on Reydisp Evolution to be the same as the relay station address.
Check the communications link by retrieving the relay settings (Relay->Settings->Get Settings)
Reydisp Evolutions allows off line generation of relay setting by saving the relay Settings File and then
downloading it. This saves time and possibly sore fingers if the relay type is a more advance model with many
protection functions.
To download a Settings File On the laptop, select Relay->Settings->Send All Settings. Confirm the action and
the program will inform whether the settings have been successfully entered into the relay. It is worth doing a
few spot checks on the setting to be confidant the correct setting are installed.
7.2 Setting via relay fascia
The relay can be set from the fascia by utilising the
×
,
Ø
,
Ö
and ENTER buttons. Settings can be selected
with the arrow buttons. Pressing ENTER when the setting to change is found will make the setting flash. This
allows the
×
and
Ø
buttons to be used to alter the setting. Once the desired setting is selected the ENTER
pushbutton MUST be pressed for the relay to active the selected setting. The setting will now stop flashing
indicating this value will be utilised by the relay software.
The menu structure is shown in the “Description of Operation “ section of this manual.
8 Secondary Injection Tests
Isolate the auxiliary D.C. supplies for alarm and tripping from the relay and remove the trip and intertrip links.
We recommend the use of an Omicron Test Set Type CMC256 (or CMC156 plus CMA156) as this has a program
to input the settings and the thermal characteristic is automatically generated and tested. The Omicron set should
be connected in accordance with the manufacturer’s instructions. Using the OMICRON I2T Overcurrent
©2010 Siemens Protection Devices Limited
Chapter 7 Page 5 of 9
