12 | WECM / Emerald eZA Manual
www.weg.net
Signal type Condition Resulting speed value
Conductors
1 2
DC voltage
a
Lower than 2V DC Zero (motor is off)
Blue
Black
From 2 to 10V DC ((Max
b
-Min
c
)/8)×(IS
d
-2)+Min
DC current
Lower than 4mA DC Zero (motor is off)
Red
From 4 to 20mA DC ((Max
b
-Min
c
)/16)×(IS
d
-4)+Min
Frequency
Lower than 10% Zero (motor is off)
Brown
From 10 to 95% ((Max
b
-Min
c
)/85)×(IS
d
-10)+Min
Table 6 - Control input reference
g
Remote speed adjust:
The speed can be adjusted by the input signals available in the control cable:
DC voltage: 2 to 10V DC [tolerance: +10%];
DC current: 4 to 20mA DC [tolerance: +10%];
Frequency duty-cycle: 10 to 95%
Voltage: 10 to 24Vpk [tolerance: -5%/+10%];
Frequency: 80Hz [tolerance: -2,5%/+2,5%];
The product will turn off if imposed signals lower than 2V DC, 4mA DC or 10%.
The speed can be adjusted using the external speed controller (see item 6.4).
Control input reference:
NOTE!
g
The standard maximum speed value is preset at WEG to be the highest value of
the speed range but, can be changed by the user (see item 6.3).
g
The product has speed memory when operating in local speed adjustment. The
last speed adjusted will be kept in memory when the input power supply is removed.
The motor will accelerate to the memorized speed when the input power supply is
reconnected.
g
The local controls inside the opening on the back cover are totally insulated.
There is no risk of shock when touch any internal part of this opening, even when the
solution is running.
ATTENTION!
After remove and reinstall, make sure that the plastic lid from the back side of the drive
cover is securely closed to guarantee the protection degree.
Figure 6 - Product standard control switches
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