Analog Outputs; Table 6 Digital Input Wiring - Mircom OpenBAS-HV-NX10 Series Installation Manual

Table 6 Digital Input Wiring

Type of field device Power source
Dry contact switch or
high switched PNP
transistor
Note: If you use a PNP
transistor, the voltage
must be DC.
Dry contact switch or
high switched PNP
transistor
Note: If you use a PNP
transistor, the voltage
must be DC.
Dry contact switch or
high switched PNP
transistor
4.4

Analog Outputs

The two analog outputs have short-circuit and thermal protection. They provide 10 mA with a
maximum voltage of 10 VDC to control the speed of a motor, the position of a valve or damper,
or light intensity using electronic ballasts with 0-10 V inputs.
!
Caution:
To ensure that analog outputs operate correctly, follow these guidelines:
• Use 18 AWG stranded wire.
• Limit the distance between the field device and the controller to 10 m (30 ft). Mircom
recommends shielded wire for noisy environments.
External 12 VDC power supply
to feed the dry contact switches
12 VDC generated by the
controller
24 VDC power supply to feed
the dry contact switches
Applying any external voltage less than 0 V or greater than 10 V will
damage the analog outputs.
Wiring diagram
Field Device 12VDC
OR
0V
24V
Field Device
OR
0V
Field Device
24VDC
OR
0V
Field Wiring
Controller
+12
UI#
0V
Controller
24V
+12
UI#
0V
Controller
24V
UI#
0V
31 (45)