Power Requirements, Fusing Requirements

2.2.1 Power Requirements

Power	The NP-610X 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

Caution

Supply Voltage

Condition

Caution Wire Routing

Connection

A Hard-wired EMERGENCY STOP should be fitted in any system using an NP-610X to comply with ICS Safety Recommendations.

Do not power the NP-610X 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 NP-610X.

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 capacitor in parallel to earth ground. This provides a path for static and high frequency dissipation. Typical values to use are 1MOhm and 4700pF.

To make a connection, strip about 3/8” of insulation off the end of the wire, turn the connector screw counterclockwise until the gap is wide open, insert the wire all the way in, and turn the screw