Sentera Controls EVSS Series, Монтаж и эксплуатация

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MIW-EVSS-DM-EN-000 - 18 / 12 / 2018 9 - 16
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5. Select the required analog input type and mode, start mode and OFF level
mode by the DIP switch on the board. (See
Fig. 4 DIP switch settings .)
Fig. 4 DIP switch settings
Ascending / descending
mode selection
(DIP switch, position 1)
ON
1 2 3 4
ON - Descending mode:
10—0 VDC / 20—0 mA
OFF - Ascending mode:
0—10 VDC / 0—20 mA
OFF level selection
(DIP switch, position 2)
ON
1 2 3 4
ON - enabled
OFF - disabled
Kick start / soft start
selection
(DIP switch, position 3)
ON
1 2 3 4
ON - Kick start
OFF - Soft start
Input mode selection
(DIP switch, position 4)
ON
1 2 3 4
ON - Current mode
(0—20 mA)
OFF - Voltage mode
(0—10 VDC)
VR3
Off
level
adj
Min.
speed
adj
Max.
speed
adj
ON
0 - 10v / 10 - 0v 0 - 10v / 0 - 20 m
A
Off
level
NB
T
Kicksta
rt
1 2 3 4
VR2 VR1
1
6. The Network Bus Terminator (NBT) is used to set the device as an end device
and by default the NBT is disconnected. It is put manually onto the pins to
be connected (see
Fig. 5 ). To assure correct communication, the NBT jumper
needs to be activated in only two devices on the Modbus RTU network (see
Example 1 and Example 2 ).
Example 1 Example 2
Fig. 5 Network bus
resistor jumper
RX
ТX
NBT
NBT
NBT
Slave 2
Master
Slave n
Slave 1
Slave 2 Slave 1
RX
ТX
NBT
NBT
Master
Slave n
ATTENTION
On a Modbus RTU network, two bus terminators (NBTs) need to be activated
ATTENTION
If an AC power supply is used with any of the units in a Modbus network, the
GND terminal should NOT BE CONNECTED to other units on the network or
via the CNVT‑USB‑RS485 converter. This may cause permanent damage to the
communication semiconductors and / or the computer!
7. Connect the power supply cable.
8.
Adjust the max. speed by trimmer (if necessary). The default setting is Us
(230 VAC). See
Fig. 6
Max. speed trimmer .
9. Adjust the min. speed by trimmer (if necessary). The default setting is 30 % Us
(69 VAC). See
Fig. 7 Min. speed trimmer .
10. Adjust the OFF level value by trimmer (if necessary). The default setting is
0 VAC. See
Fig. 8
Off level trimmer .
EVSS
ELECTRONIC FAN SPEED
CONTROLLER WITH TK