Service Information; Controller Inputs; Analog Inputs-Main Control Board (Mcb) - Daikin MicroTech II Installation And Maintenance Manual

Service Information

Controller Inputs

Analog Inputs-Main Control Board (MCB)

The 16 analog inputs to the MCB are configurable for four
different input types by positioning a jumper associated with
each input position (refer to Figure 12). The four jumper
positions are 1-RTD (temperature sensor or potentiometer),
2-MA (current), 3-NTC (10K ohms thermistor) or no jumper
NJ-VDC (voltage).
Figure 12. Analog input jumpers (MCB)
Top
of
MCB
1-RTD 2-MA
The 1-RTD jumper position is used for all the temperature
sensor inputs and 0-500 ohm actuator potentiometer position
feedback inputs. The NJ-VDC (no jumper) position is used for
0–5 VDC actuator position feedback inputs and the remainder
of the standard input devices which are configured for either
0–5 VDC or 0–10 VDC. The 2-MA and the 3-NTC (10K ohm
thermistor) jumper positions are not used in this product
application for any of the standard input devices. Refer to
Table 7 on page 22 (DAC units) and Table 8 on page 22 (SCC
units) for a description of all the analog inputs including the
correct jumper positions.
Daikin IM 696-4
3-NTC NJ-VDC
In addition to the analog input jumpers, there are two sets of
dip switches (SW1 and SW4) associated with the MCB analog
inputs. Each set contains eight switches numbered 1 through 8.
Refer to Figure 13. The switches on SW1 correspond to inputs
MCB-AI1 through MCB-AI8 and the switches on SW4
correspond to inputs MCB-AI9 through MCB-AI16. One
switch corresponds to each analog input. If the input is a
temperature sensor or potentiometer input (input jumper in the
1-RTD position) then the corresponding switch must be in the
T (OFF) position. If the input is a voltage input (no input
jumper NJ-VDC position) then the corresponding switch must
be in the V (ON) position. Table 7 on page 22 (DAC units) and
Table 8 on page 22 (SCC units) include the correct switch
settings for all the analog inputs.
Note – If a special application requires a current input with the
input jumper set to the 2-MA position, then the
corresponding input switch must be set to the T (OFF)
position.
Figure 13. Analog input switches (MCB)
Service Information
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