IM 12D08N05-01E
3-10
<3. INSTALLATION AND WIRING>
(M4 screw)
2
N
1
L
POWER
100-240 VAC/15 VA/ 50/60Hz
FUSE: 500 mA/250 VAC/T
AC
(M4 screw)
Figure 3.8a External grounding
Figure 3.8b Internal grounding
3.4 Wiring the contact signals
3.4.1 General precautions
The contact output signals consist of voltage-free relay contacts for switching electrical
appliances (SPDT). They can also be used as digital outputs to signal processing
equipment (such as a controller or PLC). It is possible to use multi-core cables for the
contact in and output signals and shielded multi-core cable for the analog signals.
3.4.2 Contact outputs
The SC450G unit’s four contacts (switches) that can be wired and configured to suit user
requirements. Contact S4 is programmed as a fail-safe contact. Please refer to section 5.7,
Contact output setup for functionality description.
l
Alarm (limits monitoring)
Contacts configured as “ALARM” can be energized when limits are crossed.
l
Fail
Contacts configured as “FAIL” will be energized when a fail situation occurs. Some
fail situations are automatically signaled by the internal diagnostics (electronics) of the
converter. Others can be configured by the user (see section 5.12 Error Configuration). By
pressing the “INFO” button on the main screen the user is given an explanation as well as
a remedy for the current fail situation.
Always connect the fail contact to an alarm device such as a warning light, alarm bell or
displayed on an annunciator.
