ECP2050
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K
EYLOCK
S
ETTING
Setting
Description
LOCKED
Keypad is fully locked.
ALLOW PUMP, PURGE
Keypad is locked except keys PUMP and PURGE.
ALLOW PUMP, PURGE, FLOW
Keypad is locked except keys PUMP, PURGE and FLOW.
UNLOCKED
Keypad is fully functional. Default value.
6.4.3. Interface
The unit is equipped with auxiliary external interface (connector
IO INTERFACE
), which can
be used according to setting described below. Number of interface pins are stated on unit rear
panel.
IO
I
NTERFACE
S
PECIFICATION
Pin
Abb.
Name
Description
1
+5V
-
Auxiliary power 5 V DC max. 40 mA.
2
AIN
−
ANALOG INPUT
Analog input ground. Internally connected with GND and
chassis.
3
AIN+
Analog input signal. 0 - 10 V DC. Overvoltage protection up
to 12 V. Sampling frequency min. 100 Hz, input impedance
100 k
, resolution 2.5 mV.
4
GND
-
Ground.
5
DIN2
DIGITAL INPUT 2
Digital input 2. Compatible with TTL, HC, HCT. Overvoltage
protection up to 12 V. In opened status it is on level H.
6
DIN1
DIGITAL INPUT 1
Digital input 1. Compatible with TTL, HC, HCT. Overvoltage
protection up to 12 V. In opened status it is on level H.
7
ACOB
DIGITAL OUTPUT
SWITCH
Semiconductor switching device, contact A and B.
Working voltage max. 60 Vdc, 42 Vac. Working current max.
240 mA. Switch impedance ON max. 2.5 ohm. Residual
current max. 1 uA.
8
ACOA
For external input/output interface IO INTERFACE are used connector blocks with screwing
contact (included in accessories).
For connecting cable to connector block, loosen the nut using small flat-tip screwdriver.
Remove isolation from the connected cable in the length of approximately 3 to 4 mm. Insert
the skinned part of cable into the place under the nut and tighten the nut. Try carefully, if the
conductor holds in the block. If the conductor is too thin, it is better to remove isolation from longer
part and bend the skinned part before inserting in the block.
Note:
Connector blocks are meant for cables with section up to 1.5 mm
2
.
