Honeywell SmartVFD HVAC MR4 User Manual page 54

C
ONTROL UNIT
6.1.2.1 Selection of terminal functions with dip switches
The shadowed terminals in Table 15 allow for three functional selections each with the so-
called dip switches . The switches have three positions, left, middle and right. The middle posi-
tion is for Test mode
your requirements.
6.1.2.2 Disconnecting digital inputs from ground
The digital inputs (terminals 8-10 and 14-16) on the basic I/O board can be disconnected from
ground by removing a jumper on the control board. See Figure 51. Lift the plastic lid to expose
the jumper and apply long-nose pliers or similar to remove it.
Figure 51. Remove this jumper to disconnect the digital inputs from ground.
. See figure to locate the switches and make appropriate selections for
Current
Current
Current
* Bus termination resistor
Figure 50. Dip switches
ON
RS485*
AO1
AI2
AI1
Honeywell
OFF
Voltage
Voltage
Voltage
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