Siemens HydroRanger 200 Instruction Manual download pdf (Page 71)

7ML19981FC01 HydroRanger 200 – INSTRUCTION MANUAL Page 57

mmmmm

Pump Control

When the first ON setpoint is reached, the pumps will start, one by one, until the material

level rate of change is set at the same value or greater than the value in:

• P703 – Emptying Indicator (pump down applications)

• P702 – Filling Indicator (pump up applications)

Set delay between pump starts using P132 – Pump Start Delay.

Single Point Mode

• Single Point Mode: one pump by rate control available that affects all pumps.

Rotating Pumps by Service Ratio

Prerequisite: Set pump relays to a service ratio value (P111 = 54 or 55).

When more than one pump is assigned a Pump Service Ratio value (in any time units) and a

pump start is required (P112 Relay Setpoint ON), the pump with the fewest running hours (with

respect to the assigned ratio values) starts.

Conversely, when a pump stop is required (113 Relay Setpoint OFF), the pump with the

most running hours (as compared to the assigned ratio values) stops.

Parameter Index Value Description

P122 1 1 These values will start Pump Two 50% of the

time and Pumps One and Three each 25% of

the time.

P122 2 2

P122 3 1

Notes:

• Set all pump control relay ON and OFF setpoints to the same value

• If the level is within 5% of Span (P007) of the OFF setpoint, then the next pump is

not started

Notes:

• The HydroRanger 200 will not sacrifice other pumping strategies to ensure that the

ratio is held true

• If the pump relays are set to the same value, then the ratio equals 1:1 and all pumps

are used equally (preset)

1 2 ... 66 67 68 69 70 71 72 73 74 75 76 ... 255 256

No comments

Siemens HydroRanger 200 Instruction Manual Page 71