Armstrong Emech G12 User Manual

3.2 Wiring Instructions
3.2.1 Power Supply Wiring
Wire the supply connections as indicted below using the correct diameter shielded cable. When placing the wiring
in metal conduit, which is earthed, shielded cable is not required.
WIRE THE SUPPLY FIRST (before making any other connections). Insure that the actuator supply
consists of a 24Vdc supply (not AC) and that the voltage tolerances are within the permissible
voltage limits of the actuator.
SWITCH THE SUPPLY OFF BEFORE CONNECTING!
Ensure conduits and wire screens are properly
grounded to reduce possible effects of EM
(Electromagnetic Interference) on actuator operation.
REFER to Table 3.1 as a guide for wiring cable lengths and voltage drops.
WARNING !!
When the actuator is wired up to the power supply, it is
important that the voltage drop to the actuator remains
no more than 1-2Volts when the actuator is operating
under load.
To check this, put a meter on the DC supply terminals at
the unit, and measure the 24vDC supply.
Keeping the meter in place, use the manual handle to
move the valve out of position . or change a set value so
the actuator is instructed to move.
IF YOU OBSERVE GREATER THAN 2 VOLTS DROP
ON THE POWER SUPPLY AT THE ACTUATOR WHEN
OPERATING, PLEASE REVIEW AND INCREASE WIRE
DIAMETER BEING UTILIZED TO MINIMISE VOLTAGE
DROP OVER DISTANCE OF CABLE RUN.
EXCESSIVE VOLTAGE DROP AT THE ACTUATOR
UNDER LOAD CAN LEAD TO UNRELIABLE
PERFORMANCE AND POTENTIALLY PERMANENT
DAMAGE TO THE INSTALLED UNIT.
Figure 3.2: Supply Connection
Armstrong International
221
Armstrong Blvd., Three Rivers, Michigan, 49093 - USA
Phone (269) 279-3602 Toll Free (888) HOT-HOSE (468-4673)
14
Designs, materials, weights and performance ratings are
approximate and subject to change without notice. Visit
armstrong international.com/emech for up-to-date information.
Continued.....

Armstrong Emech G12 Specifications

General

Brand	Armstrong
Model	Emech G12
Category	Controller
Language	English