ECH 200 BD
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4.4.3 Alarm
ALL - 12-24 V~ output for alarm, maximum current 500 mA.
For models Ech 2xx BD the following parameters are available:
Pa H56 = determines the polarity of the alarm output:
• 0 = output is active (closed contact) when an alarm is active and when the machine is switched off.
• 1 = in the same conditions, the contact is open
Pa H57 = determines if the alarm is on with the machine on off from keyboard, with remote off and on stand-by
• 0 = alarm output not enabled in OFF or standby
• 1 = alarm output enabled in OFF or standby
The power supply to the alarm output must be kept separate from the controller power supply.
4.4.4 Fan module pilot output
TC - low voltage output piloting external fan control modules.
4.4.5 Optional output
EXP – optional internal output with configurable output.
For model Ech 210 BD the optional output is digital type and is open collector for piloting the second compressor’s relay:
Rear view: rear view of the control module
External relay: external relay
For model Ech 215 BD the optional output is ANALOGUE type and can be used for piloting 4-20mA or 0-10V fans (through
parameter Pa H25)
Rear view: rear view of the control module
Parameter Pa H25 must be configured to suit the version used, as shown
in the table below:
Value
Pa. Description
0 1 2
Pa H25 Optional output
configuration
parameter
Open Collector output for
compressor 2
Proportional condensation
fan control, 4-20 mA
Proportional condensation
fan control, 0-10 V
The analogue output value is directly proportionate to the external fan control.
For example: if the external fan control has an output of 50%,
• with Pa H25= 1, the 4...20 mA output will have a value of 12 mA (50% calculated on the range 4…20), while the 0-10
V output will not be significant.
• with Pa H25= 2, the 0-10 V output will have a value of 5 V (50% calculated on the range 0…10), while the 4...20 mA
output
will not be significant.
4.4.6 Remote keyboard output
• KEYB - The keyboard output may be used for a remote keyboard.
Connect as shown in the diagram below:
Open collector
output
4-20 mA or 0-10 V
output
Optional output:
configuration
table
SERIAL KEYB
EXP
CONN A
CONN B
REAR VIEW
EXTERNAL RELAY
SERIAL KEYB
EXP
CONN A
CONN B
REAR VIEW
4-20 mA
GND
0-10 V
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