SE-SR2
Operating instructions SE-SR2
826002433-EN-Rev.C
9
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Output safe: Safety contacts
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Output aux: Auxiliary contact
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[1]: Automatic start
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[2]: Manual start without control
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[3]: Manual start with control
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a: Input circuit closes before start circuit
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b: Start circuit closes before input circuit
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t
1
: Switch-on delay
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t
2
: Delay-on de-energisation
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t
3
: Recovery time
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t
4
: Waiting period with a monitored start
Installation
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The unit should be installed in a control cabinet with a protection type of at least IP54.
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Use the notch on the rear of the unit to attach it to a DIN rail (35mm).
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When installed vertically: Secure the unit by using a fixing element (e.g. retaining
bracket or end angle).
Wiring
Please note:
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Information given in the "
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Outputs 13-14, 23-24, 33-34 are safety contacts; output 41-42 is an auxiliary contact
(e.g. for display).
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Auxiliary contact 41-42 should
not
be used for safety circuits!
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To prevent contact welding, a fuse should be connected before the output contacts (see
).
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Calculation of the max. cable length l
max
in the input circuit:
R
lmax
R
l
/ km
I
max
=
R
lmax
= max. overall cable resistance (see
R
l
/ km = cable resistance/km
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Use copper wire that can withstand 60/75 °C.
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Do not switch low currents using contacts that have been used previously with high cur-
rents.
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Sufficient fuse protection must be provided on all output contacts with capacitive and in-
ductive loads.
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The power supply must comply with the regulations for extra low voltages with protect-
ive electrical separation (SELV, PELV) in accordance with VDE 0100, Part 410.
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Ensure the wiring and EMC requirements of EN 60204-1 are met.
