Sentera Controls EVSS Series, Mounting And Operating Instructions

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INPUT REGISTERS (See Table 1 Modbus register maps )
The input registers are read-only. Table 1 shows how the data is organized in the
input register sector. The measured data starts from address 1 (30001) and ends at
address 14 (30014). The other input registers are not used. When they are addressed,
they return 0.
All the data can be read by “Read Inputs Registers” command. Table 1 shows what
the type of the returned data for each register is and the way it should be interpreted.
For example reading ‘300’ in input register 1 means that the measured analog input
signal is 3,0 VDC (or 6,0 mA), reading ‘50’ in input register 2 means that the output
voltage is 50 % Us (115 VAC).
Input register 1
(30001) shows the current value of measured analog input signal.
This value depends on the selected analog input type. When voltage input is
selected, the values vary in the range of 0—1.000 (0—10,0 VDC). When current input
is selected, the values vary in the range of 0—1.000 (0—20,0 mA).
Input register 2
(30002) shows the current value of the output voltage. This input
register is overridden by holding register 31 if output override control (holding
register 8) is enabled. When output override control is disabled, this input register
shows the value of the output voltage according to the selected operating mode.
The output voltage values vary in the range of 30—100 % Us (69—230 VAC). Reading
‘0’ (0 VAC) indicates that the controller is off.
Input register 3 (30003) shows the type of the analog input
signal. This input register is defined by holding register 11 or by the
hardware setting of position 4 of the DIP switch. The values are ‘0’
(for 0—20 mA) or ‘1’ (for 0—10 VDC).
Input register 4 (30004) shows the selected mode of the analog input. This input
register is defined by holding register 12 or the hardware setting of position 1 of the
DIP switch (
Fig. 4
), according to the selected operating mode. The values are ‘0’ (for
descending mode) or ‘1’ (for ascending mode).
Input register 5 (30005) shows the value of the maximum output voltage. This
input register is defined by holding register 13 or the hardware setting of the Max.
trimmer (
Fig. 6
), according to the selected operating mode. The register values vary
in range of 75—100 (75—100 % Us VAC).
Input register 6 (30006) shows the value of the minimum output voltage. This input
register is defined by holding register 14 or the hardware setting of Min. trimmer
(
Fig. 7
), according to the selected operating mode. The register values vary in range
30—70 % Us.
Input Register 7 (30007) gives information about the OFF level state. In Standalone
mode it contains the value set by position 2 of the DIP switch (
Fig. 4
). In Modbus
mode it contains the value of holding register 15. It could be ‘0’ (disabled) or ‘1’
(enabled).
Input Register 8 (30008) gives information about the OFF level value. In
Standalone mode it contains the value set by the OFF level trimmer (
Fig. 8
).
In Modbus mode it contains the value set by holding register 16. The register
values can vary from 0 to 40 (0—4,0 VDC / 0—8,0 mA) and from 60 to 100
(6,0—10,0 VDC / 12,0—20,0 mA). The values depend on the selected analog input
type and mode.
Input Register 9 (30009) gives information about the kick start or soft start
selection. In Standalone mode the value corresponds to the start type set by position
3 of the DIP switch. In Modbus mode it contains the value set by holding register 17.
The register values are ‘0’ (for soft start) or ‘1’ (for kick start).
Input Register 10 (30010) shows the state of the remote control input. When it is
disabled, the unit works in normal operating mode. When the remote control input is
enabled, the controller is in stand-by mode. The register values are ‘0’ (for disabled)
or ‘1’ (for enabled).
Input Register 11 (30011) shows the status of the alarm relay output. It is off when
the register value is ‘0’, and energised when the register value is ‘1’.
Input Register 12
(30012) shows the status of the unregulated output L1. When
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