2007-2008 Turf Catalog

Reference

Reference

Determining Maximum Number of Valves

Per Station of a Controller

1. From secondary current requirement chart, determine the

maximum secondary current (Amps) allowable for the model

controller selected.

2. Determine the secondary current requirement of the controller
   only and the master valve (if a master valve is being used).


3. Calculate the remaining current available for valve operation:
   maximum secondary current allowable minus the current for
   controller master valve.


4. Number of valves per station equals:

Remaining Available Current

Current Required for 1 Valve

Example

Determine maximum number of solenoid valves which

may be operated per station of an RC-7C controller using

a master valve:

1. From secondary current requirement chart, maximum secondary
   current allowable:

RC-7C = 1.5 Amps

2. Secondary current requirement for controller and master valve:

RC-7C controller only .35

Solenoid master valve .23

Total .58

3. Remaining current available:

1.5 - .58 = .9 Amps

4. Maximum number of solenoid valves per station:

.92 Amps (available)

.23 Amps/Solenoid

= 4.00

Note: Since the resulting value is a maximum, the number of solenoid valves used

per station should always be rounded down to the nearest whole number.

Secondary Current Requirements for Controllers and Valves

Determining maximum number and combinations of valves per station

• Including controller, master valve, and maximum number of valves on a station.
  ** Requires .41 Amps in-rush for one valve.

Type of 117 Volt Primary

Controller Current Requirements

or Valve (Amps)

24 Volt Secondary Maximum number of

Controllers With Power On Current Requirement Solenoids per Station

Only Not in a Cycle (Amps) as the Specification

RC-Bi 1.25 0.35 2

RC-C 1.50 0.35 2

ESP 1.50 0.03 2

ESP-Si 1.00 0.03 1

E-Class 0.65 0.07 1

Ec 0.65 0.05 1

ESP-LXi+ 1.25 0.09 2

ESP-LX+ 1.50 0.09 2

ESP-MC 2.50 0.02 2

IM 2.90 0.02 8

Valves

Solenoid Valve 0.23