2.2.1 Power Requirements
Power | The |
| 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
Do not power the
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
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