Modbus Installation |
36
Control Signal Setting
By default the humidifier is configured operate on a hardwired control signal supplied through
the unit terminal strip. This can be changed to allow the humidifier to function entirely through
its Modbus interface.
To adjust this setting:
1
Press the
Menu
key to access the menu.
2
Select the
User
options and press
Set
.
3
When prompted for a password, enter 8808 using the arrow keys. Confirm the password
with set.
4
Select the
Controls
menu and press the
Set
key. The following settings can be adjusted:
Signal Source
Analog:
Use hardwired control signal
Modbus:
Write control signal through Modbus interface
Hum. Control
External
: Use a demand control signal
Int(p)
: Use a sensor value and proportional
int(pi)
: Use a sensor value and proportional-integral control band
Control Sign
Setting not relevant when writing control signal through Modbus.
Note: Refer to the
MHTC Humidifier Configuration
section of the MH Series Installation and
Operation Manual for more information on the above settings.
1
Press
Esc
repeatedly to return to the home screen when complete.
This procedure is summarized below:
Menu > User > 8808 > Controls >
Signal Source: Analog or Modbus
Hum. Control: External, Int(p), or Int(pi)
Control Sign: As required
Содержание Modbus RTU
Страница 9: ...Modbus Installation 6 Figure 3 EL NH EL Modbus Wiring Diagram ...
Страница 10: ...7 Modbus Installation Figure 4 TC Modbus Wiring Diagram ...
Страница 11: ...Modbus Installation 8 Figure 5 MES2 and RH2 Modbus Wiring Diagram ...
Страница 12: ...9 Modbus Installation Figure 6 NHRS Modbus Wiring Diagram ...
Страница 43: ...Modbus Installation 40 The following points may be mapped for control ...
Страница 44: ...41 Modbus Installation Table 8 MES2 and RH2 Humidifier Modbus Parameters ...
Страница 52: ...49 Modbus Installation Troubleshooting Table 10 General Troubleshooting ...
Страница 59: ...Modbus Installation 56 Figure 13 Low voltage terminal strip on NHRS Humidifier ...