16 LRR 1-52, LRR 1-53, URB 55 - Installation & Operating Manual - 850645-01
Technical data - LRR 1-52, LRR 1-53
Supply voltage
■
24 V DC +/-20 %
Power consumption
■
Max. 5 VA
Current input
■
Max. 0.3 A
Reset hysteresis
■
MAX limit: - 3 % of set MAX limit (factory default)
■
MIN limit: - 3 % of set MIN limit (factory default)
Required external fuse
■
0.5 A M
Input/output
■
Interface for data exchange with the URB 55 visual display and operating unit
Inputs
■
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 command
Control OFF / Valve CLOSED / Intermittent blowdown OFF
Outputs
■
Continuous blowdown valve (CLOSED/OPEN) *
◆ 2 x volt-free relay contacts (changeover relays) **
◆ Maximum switching current - 8 A at 250 V AC / 30 V DC - cos ϕ = 1 **
■
MIN/MAX alarm *
◆ 2 x volt-free relay contacts (changeover relays) **
◆ Maximum switching current - 8 A at 250 V AC / 30 V DC - cos ϕ = 1 **
or
■
MAX alarm and MIN relay as intermittent blowdown valve *
◆ 1 x volt-free relay contact (changeover relay) - intermittent blowdown valve **
◆ 1 x volt-free relay contact (changeover relay) - MAX alarm **
* Inductive loads must have interference suppression (RC combination) as per the manufacturer's
specification
** Contact material AgNi0.15, AgSnO2
Analogue output
■
1 x actual value output 4 - 20 mA, e.g. for an actual value display
■
Max. load resistance 500 W
■
Inductive loads must have interference suppression (RC combination) as per the manufacturer’s
specification
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