Siemens ISOLATED MULTI-DROP SG-6048-01 - Manual (Page 12)

4
Testing ACCESS Devices
Siemens Energy & Automation, Inc. 9
4.3 Testing Static Trip III on Desktop
If you are testing a Static Trip III trip unit on a desktop, follow
these steps to connect the trip unit to the converter for
15 VDC power, while referring to Figure 4.3:
1. Plug the connector of the two-conductor cable into the
15 VDC output port.
2. Making sure to observe the polarity of the cable,
connect the other end to terminals 2 and 3 on the
10-pin connector supplied with the Static Trip III.
3. Connect an RS-485 cable between the 10-pin
connector and the converter. (You may need to prepare
a length of RS-485 cable as described in section 3.1
above.) Plug the cable’s three-terminal connector into
an RS-485 port on the front of the converter. Connect
the black wire from the other end of the cable to
Data(+) (terminal 4) on the 10-pin connector,
and connect the white wire to Data(-) (terminal 5)
on the 10-pin connector.
4. Plug the 10-pin connector into the 10-pin connector
port located on the back panel of the Static Trip III.
5. Plug one end of the converter’s power cord into the
120 VAC connection on the converter, and plug the
other end into any 120 VAC grounded power source.
6. Turn the power switch on.
7. Using testing software supplied by Siemens, verify that
the attached trip unit communicates properly.
Figure 4.3 Connecting a Static Trip III for Desktop Testing
Two-wire cable
RS-485 cable
+/- 15VDC
Data (+)
Data (-)
BLK
WHT
rear panel
front panel
15VDC
OUT
+ -
RS485
+ _
+ _
RS485 RS485 RS485 RS485
+ _ + _ + _
Isolated Multi-Drop
10-pin connector
on Static Trip III
1
2
3
4
5
6
7
8
9
10
4.4 Testing SAMMS on Desktop
If you are testing a SAMMS device on a desktop, follow
these steps to connect the device to the converter, while
referring to Figure 4.4 on the next page and to the SAMMS-
LV User’s Manual (Manual No. MC-3298) or SAMMS-MV
User’s Manual (Manual No. MVC-9108):
1. Prepare 2 two-conductor cables by connecting them to
one two-terminal connector, as described at the
beginning of this section and illustrated in Figure 4.4.
2. Plug the connector of the two-conductor cables into
the 15 VDC output port.
3. Making sure to observe the polarity, connect the other
end of one of the two-conductor cables to terminals
5 and 6 of the terminal block on top of the SAMMS.
4. Again making sure to observe polarity, connect the
other end of the second two-conductor cable to the
PWR (+) and PWR (-) terminals on the five-terminal
connector supplied with the SAMMS Communication
Module CM-1.
5. Connect an RS-485 cable between the SAMMS five-
terminal connector and the converter. (You may need to
prepare a length of RS-485 cable; see section 3.1.)
6. Plug the cable’s three-terminal connector into an
RS-485 port on the front of the converter. Connect the
black wire from the other end of the cable to the (+)
terminal on the five-terminal connector, and connect
the white wire to the (-) terminal on the connector.
7. Plug the five-terminal connector into the SAMMS
Communication Module CM-1.
8. Connect the CM-1 to the SAMMS device using the
supplied ribbon cable as illustrated in Figures 12 and
13.
9. Plug one end of the converter’s power cord into the
120 VAC connection on the converter, and plug the
other end into any 120 VAC grounded power source.
10. Turn the power switch on.
11. Using testing software supplied by Siemens, verify that
the attached SAMMS device communicates properly.