Table of Contents
Advertisement
Operating and Maintenance Instructions
•
BMS Settings (See H18 – Advanced Settings – BMS Settings)
o Configures the parameters of the controller's Modbus slave port
o The default settings are:
•
Menu Lock (See H19 – Advanced Settings – Main Menu Lock)
o Enables/Disables the normal access to the Main Menu screen
•
LDC Brightness (See H20 – Advanced Settings – LCD Brightness)
o Allows a selection of different LCD brightness settings
We recommend leaving the LCD Brightness at its factory default of "Auto-Detect" to avoid display
Note:
flickering and/or input voltage drop if a higher brightness setting is selected but the power supply to the MDC
does not have enough supply current e.g. when powering the MDC using 1 or 2 fan's 10Vdc supply and setting
the LCD Backlight to "Maximum"
•
Factory Settings (See H21 – Advanced Settings – Factory Reset)
o This will erase any stored information in the controller, and will change all fans to Modbus
Address 1
•
Measurement Unit (See H22 – Advanced Settings – Measurement Unit):
This option is only available when monitoring a sensor or when in constant volume / constant
o
pressure operating mode.
Selects which measurement unit is used by the MDC depending on the unit type selected:
o
•
PID Settings (See H23 – Advanced Settings – PID Settings):
o This option is only available when in constant volume / constant pressure operating mode
o Allows the configuration of the P, I and D elements of the controller's PID control
210-OMI14229-Iss2
© ebm-papst UK Ltd 2018
•
Example 2: Using a 1000Pa sensor while monitoring volume (metric) in a 4-
fan array, with a k-factor of 120 (total k-factor of 480), setting the sensor alarm
threshold to 50% will cause an alarm when the sensor reading is below 50%
of the maximum volume, in this case below 7589
When in Constant Volume/Pressure mode, the threshold is fixed to 100%. The relay will
▪
open, and the red LED will switch on when the fan array reaches 100% and the sensor
reading is below the constant volume / constant pressure setpoint.
Modbus Address: 1
▪
Baud Rate: 9600
▪
Parity: None
▪
Stop Bits: 1
▪
Disabled (Default): main menu is accessible by pressing BACK button twice whilst on
▪
Fan 1 status screen
▪
Enabled: main menu is accessible whilst on Fan 1 status screen by pressing ENTER
button twice while holding UP and DOWN buttons
(cubic metre per hour) or CFM (cubic feet per minute) for volume
▪
m
/h
3
Pa (Pascal) or INWG (inch water gauge) for pressure
▪
Operation & Maintenance Instructions
Chelmsford Business Park Chelmsford Essex CM2 5EZ
Telephone: +44(0)1245468555 Fax: +44(0)1245466336
e-mail
sales@uk.ebmpapst.com
m
/h
3
Page 22 of 45
Advertisement
Table of Contents
