GOT-2770S User’s Manual
2.2.1 Power Requirements
Power
The GOT-2770S can be powered by DC power only.
The specified voltage range is +21 to 25 Volts DC.
This insures compatibility with most controller DC
systems. The power conditioning circuitry inside the
unit is accomplished by a switching power supply.
The peak starting current can be as high as 700mA.
Fusing
Requirements
If the display does not come on within 2 seconds of
power up, remove power. An internal fuse will
prevent damage if the polarity of the DC power is
incorrect. Check wiring to insure proper connections
and try to power up again.
Caution
High Voltage
An Internal fuse will prevent damage for over voltage
condition however it isn’t guaranteed.
DC voltage sources should provide proper isolation
from main AC power and similar hazards.
Caution
Emergency
Stop
A Hard-wired EMERGENCY STOP should be fitted
in any system using a GOT-2770S to comply with
ICS Safety Recommendations.
Caution
Supply Voltage
Condition
Do not power the GOT-2770S and inductive DC
loads, or input circuitry to the controller, with the
same power supply. Note: The 24 VDC output from
some controllers may not have enough current to
power the GOT-2770S.
Caution
Wire Routing
Wire lengths should be minimized (Maximum 1600’
(500 m) shielded, 1000’ (300 m) unshielded).
Wires should be run in pairs with a neutral or
common paired with a hot or signal line.
If wiring is to be exposed to lightning or surges, use
appropriate surge suppression devices.
Keep AC, high energy, and rapidly switching DC
wiring separate from signal wires.
Equip ungrounded DC supplies with a resistor and
Installation Instructions
8
