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1
2
3
X9
4
5
6
1
2
X10
3
4
1
2
X11
3
4
1
X12
2
3
1
2
3
X13
4
5
6
1
2
3
X14
4
5
6
1
X15
2
3
X18
X19
F1
F2
SL1 DIP SWITCH
1
2
3
CONEC-
CONTACT
FUSE
TION
NO.
NO.
NO.
1
2
3
X20
4
5
6
MCB_miniMCB v2019.1
PE
GND
+24VDC
GND
RS485_B
RS485_A
MCB PE
MCB GND
MCB
LED11
24VDC_OPEN (DO4)
MCB
LED12
24VDC_CLOSE (DO5)
MCB PE
MCB GND
MCB
LED9
24VDC_OPEN (DO2)
MCB
LED10
24VDC_CLOSE (DO3)
PE
GND
+24VDC
+24VDC
STEP_B/
STEP_B
STEP_A/
STEP_A
+24VDC
GND
MCB AO1(0-10VDC)
GND
MCB AO2(0-10VDC)
GND
MCB AO3(0-10VDC)
+24VDC
GND
PE
1/1
MCB protection
1/1
MCB protection
LED1
LED2
LED3
LED4
LED5
LED6
LED7
LED8
PURPOSE (ON POSITION)
120R line termination resistor
1kR connection line pull-up resistor
1kR connection line pull-down resistor
MAX
LED
CONTACT NAME
CURRENT,
NO.
A
+24VDC
GND
PE
+24VDC
GND
PE
Remote Control connection (RS485)
RECIRC_+-
Recirculation damper control 3P
RECIRC_+-
BYPASS_+-
By-pass damper control 3P
BYPASS_+-
24VDC Power supply for water heater actuator
By-pass step motor control
Supply air fan control output (0-10VDC)
Extract air fan control output (0-10VDC)
Supply air heater control output (0-10VDC)
MCB Power supply 24VDC
Remote Control connection (RS485)
BMS connection (RS485, configurable via SL1)
MCB power supply fuse
MCB peripheral power fuse
12V peripheral power indication
3.3V peripheral power indication
MCB status LED
Remote Control (RS485) connection transmit indication
Remote Control (RS485) connection receive indication
BMS (RS422/485) connection receive indication
BMS (RS422/485) connection transmit indication
Peripheral power control relay indication
MCB EX1
FUNCTIONAL UNIT TITLE
24VDC Power supply for water preheater actuator
24VDC Power supply for water cooler actuator
EN |
23
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