Option Description - DART Controls 250G CONTROL Serie Manual Del Usuario

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-5 option

Isolated 4-20 ma.Signal Follower

-7 option

Isolated 4-20 ma. Signal Follower

with Auto/Manual Switch

-5 and -7 option Hookup Procedure

DO NOT USE TRIMPOT CHART TO ADJUST MIN AND MAX TRIMPOTS ON MAIN BOARD. IF

ADJUSTMENT IS NEEDED THEN REFER TO THE SETUP PROCEDURE BELOW.

The -5 option is a 4-20 mA isolated signal card that replaces the speedpot to control speed. The 4-20 mA signal input can be

either grounded or ungrounded. The board sets on spacers screwed to the pot HI, Wiper, and LO terminals on the main board

using long screws. The current source connects to the + and - two position terminal strip (P16-1 and -2) on the -5 option board.

The Linearity trimpot on the -5 option board is set at the factory for proper linearity, however this trimpot may need to be re-

set after tuning the Max and Min trimpot settings on the control for your specific application. If needed then refer to the setup

procedure below.

The -7 option is also a 4-20 mA isolated signal card but it allows the control to be run in either the Manual mode via a speed

pot or the Auto mode via the 4-20 mA signal. This option also includes a Balance trimpot which is used to scale the maximum

speed in the Manual mode. It is factory set so the maximum speed in Manual mode equals the maximum speed in Auto mode.

The Linearity trimpot on the -7 option board is set at the factory for proper linearity, however this trimpot may need to be re-set

after tuning the Max and Min trimpot settings on the control or if the Balance trimpot on the –7 must be reset for your specific

application. If needed then refer to the setup procedure below.