Gestra BAE46-3 Continuous Blowdown Valve

Data sheet 819922-00 Issue: 08/19
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Conductivity Controller
LRR 1-60
System description
Technical data
The LRR 1-60 conductivity controller can be used in conjunction with LRG 16-60, LRG 16-61 and LRG 17-60 conductivity
electrodes as a conductivity controller in pressurised steam and hot-water plants and in condensate and feedwater tanks.
The equipment is configured and operated and information is viewed via the URB 60 visual display and operating unit.
Supply voltage
Function The LRR 1-60 conductivity controller is a 3-position stepping controller. It cyclically evaluates the data telegrams
from a conductivity electrode (e.g. LRG 16-60, LRG 16-61 or LRG 17-60).
The data are transferred to an ISO 11898 CAN bus via the CANopen protocol.
Function tests and failure diagnosis are performed using the
URB 60 visual display and operating unit.
Possible combinations of functions and equipment Conductivity controller
LRR 1-60
Function Evaluation of CAN bus data telegrams from connected LRG 16-60, LRG 16-61 or
LRG 17-60 conductivity electrodes.
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3-position stepping controller with proportional plus integral control (PI controller)
and actuation of an electrically operated continuous blowdown valve.
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MAX alarm when the conductivity limit is exceeded.
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MIN alarm when conductivity drops below the minimum limit.
Alternatively
MIN relay for automated intermittent blowdown.
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Power consumption ■■Max. 5 VA Current input ■■Max. 0.3 A Required external fuse
■■0.5 A M Input/output ■■Interface for ISO 11898 CAN bus, CANopen, insulated
Inputs LRR 1-60 ■■1 x analogue input for potentiometer 0 - 1000 W, two-wire connection (display of valve position)
■■1 x volt-free input 24 V DC (standby) for inputting an external switching command,
Control OFF/Valve CLOSED/Intermittent blowdown OFF Outputs of MIN/MAX contacts/Control valve (OPEN/CLOSED)
■■4 x volt-free relay contacts, contact material AgNi0.15, AgSnO2 Configurable as:
◆◆ MIN/MAX alarm or MAX alarm and MIN relay as automatic intermittent blowdown
◆◆ Continuous blowdown valve (CLOSED/OPEN) ■■Maximum switching current - 8 A at 250 V AC/
30 V DC - cos ϕ = 1 ■■Inductive loads must have interference suppression
(RC combination) as per the manufacturer's specification.
Analogue output ■■1 x actual value output OUT 1: 4 - 20 mA, e.g. for an actual
value display
The valve position can be displayed if a potentiometer is connected (in the control
valve). The valve position is then shown on the URB 60 visual display and operating unit.
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Actual value output 4-20 mA
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Volt-free input 24 V DC (standby) for inputting an external command Control OFF/Valve CLOSED/
Intermittent blowdown OFF.
■■24 V DC +/-20 %
■■Max. load resistance 500 W Indicators and controls ■■1 x multicolour LED (orange, green, red)
◆◆ orange = power up ◆◆ green = running
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◆◆ red = malfunction ■■1 x 4-pole code switch for setting the controller group and baud rate
Protection class ■■II double insulated
IP rating to EN 60529 ■■Housing: IP 40 ■■Terminal strip: IP 20