Siemens HydroRanger 200 Manual de instrucciones descargar pdf (Pagina 144)

Page 130 HydroRanger 200 – INSTRUCTION MANUAL 7ML19981FC01

mmmmm

Parameters

P118 Relay Output Logic

The logic applied to relays to determine the contact open or closed state.

The relay contact operation is NORMALLY CLOSED for alarms and NORMALLY OPEN for

controls. See P111

Relay Control Function

for more information.

Power Failure

When power is cut to the HydroRanger 200, its relays fail to the following states:

To use relays 3 or 6 as general alarm indicators, set P118 to 3 – negative logic and wire

the alarm for normally open operation. When an alarm event occurs (see below) or when

power is cut, the circuit closes and the alarm activates.

Positive Logic

In software, all relays are programmed the same way, with ON setpoints indicating when

to change the relay contact state (open or closed). This parameter allows the reversal of

the operation so that relay contacts can be NORMALLY CLOSED or NORMALLY OPEN.

P118 is preset to 2 which is positive logic.

Negative Logic

When P118 = 3 (negative logic), the operation for the indexed relay is reversed from

normal.

Primary Index Relay

Values

Value Logic

Alarm

Contact

Pump or Control

Contact

2 * Positive Normally Closed Normally Open

3 Negative Normally Open Normally Closed

Related • P111 Relay Control Function

Relay States

Relay Fail State

1,2,4,5 Open

3,6

Open or Closed

Relays 3 and 6 are Form C types, so you can wire it either NORMALLY

OPEN or NORMALLY CLOSED. Check the wiring before programming.

1 2 ... 139 140 141 142 143 144 145 146 147 148 149 ... 255 256

Sin comentarios

Siemens HydroRanger 200 Manual de instrucciones Pagina 144