Siemens HydroRanger 200 Instruction Manual download pdf (Page 48)

Page 34 HydroRanger 200 – INSTRUCTION MANUAL 7ML19981FC01

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Relays

Relays are the primary controls of external devices

such as pumps or alarms.

The HydroRanger 200 comes with extensive control

and alarm functions.

General Introduction

Six onboard multi-purpose relays are provided on the HydroRanger 200. Each relay may

be independently assigned to one function with a corresponding status icon on the LCD.

The relay functions fall under three modes of operation:

Relay Function

Alarm

Level

In high alarm, the function goes on when the level rises to the ON setpoint and goes off

when the level lowers to the OFF setpoint. In low alarm, the function goes on when the

level lowers to the ON setpoint and goes off when the level rises to the OFF setpoint.

In Bounds

The relay will be in alarm if the level is inside the zone between the setpoints.

Out of Bounds

The relay will be in alarm if the level is outside the zone between the setpoints.

Rate of Change

In filling alarm, the function goes on when the rate of filling increases to the ON setpoint

and goes off when the rate of filling drops to the OFF setpoint. In emptying alarm, the

function goes on when the rate of emptying increases to the ON setpoint and goes OFF

when the rate of emptying drops to the OFF setpoint. For emptying alarm, the setpoints

must be entered as negative values.

Mode Function

alarm alarm ON = LCD Icon ON = relay coil de-energized

pump pump ON = LCD Icon ON = relay coil energized

miscellaneous contact closed = LCD Icon ON = relay coil energized

Relay Number

Ring indicates

relay is configured

Dot indicates relay

is energized/de-

energized

1 2 ... 43 44 45 46 47 48 49 50 51 52 53 ... 255 256

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Siemens HydroRanger 200 Instruction Manual Page 48