Key Automation 900SN-21 Instruction Manual page 24

CONNECTOR CN5
25) ANT Antenna connection (signal)
26) ANT Antenna connection (braid)
27) CH2 2nd radio channel connection (only if the 2 channel snap-in receiver is used)
28) CH2 2nd radio channel connection (only if the 2 channel snap-in receiver is used)
CONNECTOR CN6
33) BAT+ Connection positive battery charger
34) BAT- Connection negative battery charger
Built-in current controlled recharge circuit with backup operation, electronically protected against
short circuits for use it connect 2 batteries in series 12Vdc max.7Ah
35) 24V+ Connection of accessory power supply 24Vac 300mA max
36) 24V- Connection of accessory power supply 24Vac 300mA max
CONNECTOR CN7
29) + Positive power supply of the encoders
30) ENC1 M1 Signal of the encoder for motor M1
31) ENC2 M2 Signal of the encoder for motor M2
32) - Negative power supply of the encoders
The electronic brake is always active in both operating directions, when it intervenes the operation
reverses for both doors for 2 seconds then the movement is stopped for 1 second then it continues
motion in the direction opposite of the obstacle; if it intervenes three consecutive times, the entire
system will STOP, deactivating the automatic closure if necessary, making it necessary for the user
to provide a start impulse, upon which the control unit will perform a realignment when opening,
showing EM on the display.
CONNECTOR JP1
Connector for radio receiver mod:
900RXI-42, 900RXI-42R, 900RXI-22
M1/M2 +
SN-21 brown
24
M1 M2
green green
M1/M2 -
white