BA_M-SHEV_EN_17
www.simon-protec.com
Date: 30.07.2019
Issue: 1.7/07.2019
Page 13
Components — Motor Relay (MR-120)
— Motor Relay (MR-120)
2.6 Motor Relay – MR-120
Figure 11
The MR-120 provides the output voltage for the actuators. The
output at terminals “S” and “O” is designed in the pole changing
technique.
OPEN:
S = „+ “ O = „–“
CLOSE:
S = „–“ O = „+“
At the MR-120, you can find:
• a 10 A fuse for the motor outputs
• two interfaces for actuators including separate line
monitoring
• two contacts for ventilation function
(e.g. button / thermostat)
• analog input (0 – 10
V DC
/ 4 – 20 mA) for sequential
triggering of actuators for ventilation purposes
• visual indicators:
– two white LEDs – triggering in “OPEN” / “CLOSE”
direction
– yellow LED – “Failure”
– green LED – “OK”
2.6.1 Triggering of the load relays
(“S” and “O” terminals)
The power output for the smoke and heat exhaust actuators is
represented by two power relays which operate in pole chang-
ing technique to ensure OPEN
/
CLOSE triggering. The
M-SHEV motor outputs are fitted with overload protection.
During mains failure mode, the relays drop out immediately as
described in Chapter 2.2 “Fault mode” on page 9. They are on-
ly reactivated if an ALARM is triggered.
2.6.2 ALARM functions
2.6.2.a Open delay in alarm mode
The MR-120 allows you to set a start delay for
certain applications (e.g. in combination with sun
protection systems in front of windows). This
ALARM triggering will be displayed immediately, received
and processed and can be indicated by an MI-100 message
interface. After the intended ALARM start delay time has
been elapsed, the actuators move to the intended ALARM
position.
2.6.2.b Priority function (Basic)
The MR-120 module operates as standard with 3
priority levels for detection lines 1 (HE button), 2
(smoke detector) and 3 (BMZ). When an as-
signed sensor interface is triggered, the MR-120 reacts by
controlling the opening actuators in the OPEN direction. It is
only possible to configure 1 common group of SI modules for
all priority levels.
This function allows you to define any priority sequence for
the indicating lines. You can also invert every alarm trigger.
When this setting is enabled, the allocated opening units are
moved in the CLOSE direction instead of the usual OPEN
direction, if an alarm is triggered.
2.6.2.c Priority function (Extended)
The extended priority function allows to configure
an individual SI-100 group for each priority level.
MR-120
Motorrelais
Motor Relay
M–SHEV
®
Factory-configured
Motor
Fuse
Internal
(internal
power supply)
Ventilation 1/
Ventilation 2
Motor 1| Motor 2
Analog
connection
input
BUS connection
INFORMATION
The triggering priorities and other functions can be
modified on request using the SIMON LINK configuration
software.
ATTENTION
This function can affect standards-compliant processing of
alarm signals. Please check with the approval authorities
regarding this function.
INFORMATION
If you change a setting at this point, please remember to
apply a functionally identical setting to the ventilation func-
tions (see chapter 2.6.3.c “Open delay in vent mode” on
page 14).
INFORMATION
If the ALARM release is inverted on the FAS indicating line
(set to CLOSE), it is recommended to use the setting “FAS
auto-reset” on the SI-100! (See Chapter 2.5.6 “Fire alarm
system AUTORESET function” on page 12.)
This has the advantage that the BMZ-ALARM is automati-
cally deleted after the release by the BMZ and the ventila-
tion function is available again via the ventilation button.
