Setting up GMB Series Large Displays

In this Blog we discuss the important steps in setting up GMB Series Large Displays (or other Digital Displays by Alish)

Setting up Alish GMB Series Large Displays

Note: It is important to note that the settings shown in the user manuals provided are generally NOT the default settings. You need to take care to keep track of the dfalt settings or only adjust settings which you are familiar with. 

1)Connect power, and 4-20mA Input as shown on the side label

2)Set the input to 4mA test signal.

3)To check settings press  until you see PID/0000 on screen

4)Press ENT several times until you see SYS

5)Press ENT to enter system settings mode.

6)Default settings (press ENT to scroll through)

 

Default settings in GBMA series (via supplied remote control)

 

DP = 0     -> This means there are no decimal points -> change as necessary by pressing  keys

DSL = 0 -> this means 4mA Input will Display 0 on screen (when calibrated correctly)

DSL = 2.5 -> this means 4mA Input will Display 2.5 on screen (when calibrated correctly, and decimal point was set to 2 above)

 

All other settings in SYS do not modify unless you need to change advanced settings. Default settings are generally fine.

ZB = 0000

ZDT = 0000

HB = 0000

HDT = 0000

SQR = NO  -> square root math function

DIS = IP   -> what parameter you wish to display (IP = input value)

FIL = 1    -> Input filter time constant

DOV = 99.99

AVG = 0010

LCU = 0000 

COD = 0000  -> Set user password to access menu

LOC = NO    -> To lock the settings

ID = 0000

 

Now the Display is set with default factory calibration.

 

If the Display is showing an offset, such as with 4mA is showing 0.02 etc on screen then check the calibration and wiring to the input connections of the GBMA display meter first .

 

Otherwise you can try fine adjusting the the scaling. If both low and high scaling limits show the same offset then you can try to modify the AOF setting form in ADJ menu from the default. For example if the offset is 0.02 so you see 4mA = 0.02 and 20mA = 2.52   then you can set AOF to -2 to correct this.

However if you are seeing only 4mA = 0.02 and 20mA = 2.5o then you should adjust the DSL number down by 0.02 to -0.02 to correct this. If there are still some random movement then you can consider increasing the Filter time constant value (FIL) to above 1, the higher the number the more filtering and the longer the display will take to change values

 

The default settings for ADJ menu are as follows.

DOF = 00.00

DGA = 1.000

AOF = 0000

AGA = 0000

 

For other models such as GBMT

The settings are the same, the main difference is the input range. For example GMMT-K is for Type K thermocouple Input -200 to 1360 Deg C

Note: -200 Deg C will be the DSL, and +1360 will be the DSH default setting. By default he until will display the actual temperature the probe read so there should be no need to adjustment

For further advice feel free to contact out friendly sales team at Fastron Electronics

To see our range if Digital Panel Meters online see our online store