Rain Bird MDC2 User Manual download pdf (Page 3)

2. Connect the controller cables and power

Output

Power supply

Power cables

Mains 120-V

AC Power

FL O

1. Connect the sensor to the controller

3. Connect the field decoders and solenoids

Two-wire cable

Rain sensor

5. Connect the sensor decoder and sensor

DBR/DBY connections

6. Connect the surge protector

Surge protection recommended for single

and double address decoders

*USB Adapter necessary for RS232 to USB connection.

#18 AWG wire

#8 AWG (max. gauge) wire

Sensor

SD-210 Sensor decoder

DBR/DBY connections

LSP-1 Surge

Protector

DBR/DBY connections

Field Decoder

Solenoid (valve)

DBR/DBY connections

DBR/DBY connection

Ground

Grounding Rod

Gounding rod

(601)

(401)

Output

Input

Input

Input

DBR/DBY connections

(601)

(401)

Grounding Rod

401 & 601 only

Input

Output

DBR/DBY connections

(601)

(401)

Input

Output

Pump Relay

Pump Motor

Pump Relay

Relay-100

120 VAC

Pump Motor

120 VAC 1 HP

Field Decoder

Source

220 VAC

Source

Pwr Gnd

Relay-100

4. Connect the field decoder and pumps

(Master or Booster)

Field Decoder

Solenoid (valve), Master

or Booster Valve

Two-wire #14 AWG

(max. gauge)

communication cable

Grounding Rod

401 & 601 only

220 VAC 2 HP

Pwr Gnd

Two-wire cable

Grounding Rod

401 & 601 only

Two-wire cable

Computer

Valve Box

Valve Box

Valve Box Valve Box

RS232/USB*

or

phone

modem

RJ-11

1 2 3 4

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