Stahl EC-940-DUA Series, Instruction Manual

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24 MNTCMPXT_1824_EN
6.10 Alarm and relay connections
The alarm contacts are present on J3 connector.
J3
Fig. 32
The unit is equipped with the alarms and relays
indicated in the table.
ALARM AND RELAY CONNECTIONS
Terminal Description
RL2 Relay 2, Terminal A
RL2 Relay 2, Terminal B
RL1 Relay 1, Terminal A
RL1 Relay 1, Terminal B
COM Common alarms, A1-A2-A3-A4-
A5, mass alarms
AL5 Alarm 5 (dry contact)
AL4 Alarm 4 (dry contact)
AL3 Alarm 3 (dry contact)
AL2 Alarm 2 (dry contact)
AL1 Alarm 1 (dry contact)
Tab. 3
All alarms have an approximate reach of 200m, which
can be obtained using an unshielded cable with a
minimum section of 0.25mm² (23AWG).
• Slide the cables through the entry device.
• Take the J3 removable female connector from the
connectors board and connect the alarm wires to
it.
• Plug the cabled connector to J3 plug.
6.10.1 Connecting an alarm with dry
contact
For a dry contact alarm (alarms AL1, AL2, AL3, AL4,
AL5), implement the connection as shown in the
figure.
AL1 COM
Dry contact
Fig. 33
The dry contact alarm can be NO (normally open) or
NC (normally closed).
For further information refer to the relative chapter (
9.6.6.1 Alarms Menu, page 50).
6.10.2 Relays connection
The relays are usable with the specifications
described below. Working voltage: up
to 30Vac or 60Vdc. Current: 1A max. Use
suitable cable sections with the following
characteristics: from 0.25mm² (23AWG) up
to 1.5mm² (15AWG).
Due to the absence of polarity, both terminals of the
same relay can be connected either to alternating or
direct current voltages.
For further information refer to the relative chapter (
9.6.6.1 Alarms Menu, page 50).
• Slide the cables through the entry device.
• Take the J3 removable female connector from the
connectors board and connect the relays wires to
it.
• Plug the cabled connector to J3 plug.