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Technical Documentation
Rev. 01
Power Factor Regulator
BLR-Q(U)
Page 7 of 39
1.5 Alarm relay
BLR-Q(U) is equipped with an alarm relay to signal proper function of the system. The alarm relay has one
C/O contact. The common point is terminal M.
Between the terminals M and MO is the breaking contact. This contact is closed in alarm condition or when
BLR-Q(U) is disconnected from voltage.
Between the terminals M and MS is the closing contact. This is closed in proper condition of the system.
The breaking capacity is 3A / 250V AC.
The circuit diagram is in chapter 3.4!
1.6 Digital input
1.6.1 Digital input for alarm-system
BLR-Q(U) is equipped with a digital input for AC-voltage for alarm-system (50-250V AC, terminals DI1.1 and
DI1.2). Digital input can be active high or active low. The function can be programmed in the menu "SETUP /
ALARM / DI INPUT" (2.4.25)
Following codes are possible in voltage control mode:
00
= control following to the charachteristic
01
= centre cos phi
10
= cos phi ind
11
= cos phi cap
More details for the programming can be found in chapter "ALARM".
See circuit diagram in chapter 3.4!
1.7 Digital output
BLR-Q(U) is equipped with one digital output (terminals DO1 and DO2). This output is a potential-free clos-
ing contact. The breaking capacity is 5A / 250V AC. The function of this output can be programmed in the
menu "SETUP / ALARM" (chapter 2.4.25).
The circuit diagram is in chapter 3.4!