Motorola Lightning Board Specs

The MLB series boards are designed to protect 24vac and 24vdc Motorola Irrigation Control systems from the harmful effects of lightning strikes. It has 8, 12, or 14 protected outputs with Manual, Automatic, and Off modes with 2 protected data input lines.

Valve Output Specs

  Normal output operating voltage: 24 Volts AC, 24 Volts DC

                                    Stage one:

                                    clamping response time:            1 ns

                                    max discharge current:               20 kA

                                    clamping voltage:                        75 Volts DC +/- 20%

                                    Stage two:

                                    Normal operating current:            .750 amps

                                    saturation current:                        1 amp

                                    Stage three:

                                    joules:                                        23.0

                                    max discharge current:                2k

                                    clamping voltage:                        47 Volts DC

                                    Stage four:

                                    hold current:                                1.1 amps

                                    trip current:                                  2.2 amps

                                    voltage level:                                60 volts

                        Data Input Specs

                                    Normal input operation voltage:    30-35 Volts DC

                                    Stage one:

                                    clamping responce time:                1 ns

                                    max discharge current:                   20 kA

                                    clamping voltage:                           75 Volts DC +/- 20%

                                    Stage two:

                                    Normal operating current:            .750 amps

                                    saturation current:                        1 amp

                                    Stage three:

                                    joules:                                            8.8

                                    clamping voltage:                            38 Volts DC

                                    max discharge current:                    1kA

                                    Stage Four:

                                    power rating:                                  1500 watts

                                    clamping voltage:                            39 Volts DC

Physical dimensions

                                    5.000 inches x 6.500 inches

© Control Tech USA, Inc 2005