Solid State Soft Start


Series MP700 - Combined Manual and Automatic

Metron series MP700 Solid State Soft Start, reduced voltage, automatic Fire Pump Controllers provide "Soft" starting and "Soft" stopping of electric motors. This solid state starting method reduces the inrush current and mechanical shocks associated with other conventional reduced voltage starting types. At start-up, a break away current is provided, followed by a timed ramp-up to 500% of the motor's full load amps. Initial current steps as well as current ramp time are completely adjustable to provide optimum starting in any electrical motor driven fire pump application. The solid state unit is supplied with the following features:

  • Instantaneous Overcurrent Detection
  • Shorted SCR Detection
  • Phase Loss Monitor
  • Heatsink Over Temperature Switch

In addition, The MP700 series can be supplied with all of the other proven standard features found in the complete line of Metron electric fire pump controllers.

Function

The MP700 series Soft Start electric Fire Pump Controllers utilizes a state of the art solid state motor controller. The motor voltage is raised to an intitial torque value (an adjustable value of locked rotor torque). The motor voltage is gradually incresased during the acceleration ramp time, (adjustable from approximately 3 to 30 seconds).

After a minimum run period and all starting causes have returned to normal, the solid state controller will initiate a stop sequence. This furncion will reduce surges in the pumping system during stopping a centrifugal pump by smoothly decelerating the motor at a selectable rate.

 

 

Outline and Hookup Drawings:


 

Without Transfer Switch

With Transfer Switch

Voltage

HP Range

Outline

Hookup

Outline

Hookup

200

15-60

CD34002D

CH33698E

CD34009E

CH34016F

75-100

CD33779C

CH33765E

CD33813D

CH33860G

125

CD34284B

CH33765E

CD34282B

CH33860G

150

CD34521A

CH33765E

CD34522A

CH33860G

200-250

CD32948B

CH33766E 

CD32960B

 CH33861G

208

15-75

CD34002D

CH33698E

CD34009E

CH34016F

100

CD33779B

CH33765E

CD33813D

CH33860G

125-150

CD34284B

CH33765E

CD34282B

CH33860G

200-250

CD32948B

CH33766E

 CD32960B

CH33861G 

220-240

15-75

CD34002D

CH33698E

CD34009E

CH34016F

100-125

CD33779B

CH33765E

CD33813D

CH33860G

150

CD34284B

CH33765E

CD34282B

CH33860G

200

CD34521A

CH33765E

CD34522A

CH33860G

250

CD32948B

CH33766E

CD32960B

 CH33861G

380-415

15-125

CD34002D

CH33698E

CD34009E

CH34016F

150-200

CD33779B

CH33765E

CD33813D

CH33860G

250

CD34284B

CH33765E

CD34282B

CH33860G

300

CD34521A

CH33765E

CD34522A

CH33860G

350

CD32948B

CH33766E

CD32960B

CH33861G 

440-480

15-150

CD34002D

CH33698D

CD34009E

CH34016F

200-250

CD33779B

CH33765E

CD33813D

CH33860G

300

CD34284B

CH33765E

CD34282B

CH33860G

350-400

CD34521A

CH33765E

CD34522A

CH33860G

500

CD32948B

CH33766E

CD32960B

CH33861G 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CF=Consult Factory

 
Drawings are provided in ADOBE pdf Format and are provided for reference only. Drawings and Specifications subject to change without notice. Drawings should not be used for construction. Contact our sales department for specific as-built drawings for your special project.