Choosing The Controller Type (Limit Or Proportional); Choosing Break/Make Contact Relay Type - EUTECH INSTRUMENTS ALPHA CON 1000 CONDUCTIVITY CONTROLLERTRANSMITTER (REVISION 3) Instruction Manual

Operating Instructions
7.4.2

Choosing the controller type (limit or proportional)

This mode lets you choose your controller type: limit control, pulse length proportional control, pulse
frequency proportional control, or control off.
Use limit control with pumps or values for fast response.
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Use pulse frequency proportional control to operate your pumps smoothly
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Use pulse length proportional control for precise control of proportional valves.
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Use control off to operate controller as a monitor only or to prevent relays from switching.
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1) Follow directions in 7.4.1 to enter Controller mode.
2) Press the ENTER key. The upper display shows the current controller type and the lower display
shows "tyP".
3) Press the ▲ or ▼ keys to select your controller type.
L.Ct = limit value pickup (on/off control).
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oFF = controller off.
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PLC= pulse length control
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PFC= pulse frequency control
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4) Press the ENTER key to confirm your selection.
5) Proceed to 7.4.3, or return to Measurement mode by pressing the ▲ and ▼ keys simultaneously
(escape).
7.4.3

Choosing Break/Make Contact Relay Type

Note: If the controller type "oFF" is set, the parameters listed in 7.4.3, 7.4.4, and 7.4.5 are blanked out.
This mode lets you determine the relay-state under Non-Alarm condition – dEEN (de-energised) or EN
(energised).
1) Follow directions in 7.4.1 to enter Controller mode.
2) Press the ENTER key. Scroll until the lower display shows "rEL" and
the upper display shows the current selection (de-energised = dEEN
or energised = EN).
3) Press the ▲ or ▼ keys to choose de-energised or energised relay
state.
4) Press the ENTER key to confirm your selection.
5) Continue with Advanced Set-up mode procedures, or return to
Measurement mode by pressing the ▲ and ▼ keys simultaneously
(escape).
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αlpha-CON1000
HOLD SETUP
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HOLD SETUP
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