Siemens 200 instruction manual Relays, General Introduction, Relay Function, Alarm

Relays

Relays are the primary controls of external devices such as pumps or alarms. The MultiRanger comes with extensive control and alarm functions.

General Introduction

Depending on the model, up to six onboard multi-purpose relays are provided on the MultiRanger. Each relay may be independently assigned to one function and has a corresponding status icon on the LCD.

The relay functions fall under three modes of operation:

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 Function

Note: The MultiRanger 100 or 200 can be programmed with relays. The number of relays installed depends on the model. To determine the number of available relays that can be utilized in your MultiRanger 100 or 200, open the lid and count the large white relays to the left of the display. It is important to count the number of on-board relays as the software will allow programming of up to six relays whether they are installed or not.

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 [MR 200]

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

Out of Bounds [MR 200]

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

Rate of Change [MR 200]

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.

7ML19981FB06 MultiRanger 100/200 – INSTRUCTION MANUAL Page 41

Relays