4
ELECTRICAL CONNECTIONS
24
OPTISYS TUR 1060
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01/2019 - 4007152501 - MA OPTISYS TUR 1060 R01 en
4.5.2 Alarms terminal (signal output)
The terminal block has spring loaded connections. To open the connection, insert a 3 mm /
1/8 inch flat blade screwdriver into the slot right above the electrical connection. Pulling up
slightly on the screwdriver opens the terminal block connection. Removing the screwdriver
tightens the connection. There are two stacked rows of connections which are labeled. The
alarm connections are on the upper row. The RS-485 and 4-20mA are on the lower row. These
connections are rated for a wire size from 12...30 AWG / 0.05
…
3 mm
2
, either solid or stranded.
The terminals "ALARM 1" and "ALARM 2" are mechanical relays rated at 120 ...240 VAC and 2 A.
The abbreviations on the board and below the terminal have the following meanings:
•
NO: Normally open
•
NC: Normally closed
•
C: Common
As the configuration of the alarms is fail-safe, the normal state is a power supplied device and
non-active alarms. For detailed information concerning the configuration of the alarms refer to
Configuring the alarm relays
on page 41.
Connections are labeled beneath the large terminal block. These connections are on the upper
row.
