MD7LWA
EM-8060 Rev.6 P. 4 / 5
■
CONNECTION DIAGRAM
5
2
6
3
7
8
DISCHARGE
ELEMENT
DISCHARGE
ELEMENT
4
1
Series Resistance
(SHLD)
Surge Side
Protected Side
Protected Device
M-RESTER
SHLD
FG
+
–
*
3
*
2
*
1
*
1. Be sure to use twisted-pair cables.
*
2. Choose the M-RESTER
–
FG when the shield wire is to be grounded.
*
3. When the twisted-pair cable is with a shield, connect it to the surge protector’s terminal 8, and follow instructions given by the protected
device for the terminal 7. When SHLD is not isolated from NET A / B, DO NOT connect the terminal 7 to SHLD.
*
4. Oxide film on the surface of an aluminium rail may lower the electric conductivity between this module and the ground. Use a steel or copper rail.
*
5. Be sure to ground the DIN rail. Recommended grounding resistance max. 100 ohms.
*
6. Cross-wire from the DIN rail to the metal housing of the protected device to equalize the ground potential.
Ground only the surge protector when the protected device has no grounding terminal.
NET
A, B
DIN RAIL ADAPTOR
(for grounding)
DIN RAIL
Grounding
*
4
*
5
Crossover Wire
*
6
U
U
■
NETWORK CONFIGURATION
Protected
Devices
(Nodes)
M-RESTER
G
FG
FG
M-RESTER
G
FG
FG
Protected
Devices
(Nodes)
• The M-RESTER is applicable to networks which consist only of FTT-10A.
Not applicable to the ones connected to Link Power network.
• The maximum number of nodes connectable to the network segment is reduced by one
when one unit of M-RESTER is added.
• When the distance between nodes are relatively long (e.g. grouped and separated by cabinets),
install the M-RESTER by each group of devices. Insert the M-RESTER at the surge side of the network.
• For detailed information on the network, refer to L
ON
W
ORKS
FTT-10A Free Topology Transceiver
User’s Guide provided by Echelon.
Crossover Wire
Crossover Wire
Grounding
Panel / Cabinet
Protected Side
Surge Side
Network Cable
Network Cable
Panel / Cabinet
Protected Side
Surge Side
Network Cable
056 222 38 18
www.sentronic.com
SENTRONIC
AG
