Power Unit; Terminal Description - Yale 7402 User Manual

Power Unit

1. Warning
- Don't dismantle or alter the unit. Fire or electric shock could result.
- The unit must be installed and wired by a qualified technician.
- Do not connect any non specified power source to the N, L terminals, Fire, damage to
the unit, or system malfunciont can result.
- Keep the unit away from water or any other liquid, risk of fire or electric shock.
2. Introduction:
The power unit is designed for two wire systems. It supplies power to the outdoor station,
indoor monitor and other accessories. The features are as follow:
• Universal AC input/full range
• Multi protection: sho rt circuit, overload, over voltage
• Cooling by free air convection
• DIN rail mounting

3. Terminal Description:

N N L SW
LED
PA P- P+
CN2 CN1
N: AC input.
L: AC input.
SW: Swi t ch termina l.
LED: Power indicator,always on when plug in p ower.
CN2 : PA and P+ terminal should be sho rt-circuited.
CN1: Bus control termina l.
BUS(IM): Indoor moni tor conne ction termina l.
BUS(IM) BUS(DS)
BUS(DS): Door st ation conne ction termina l.
* Press on both
sides of the cover
and lift to remove
YDV7402-V1