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Setting
LOCKED
ALLOW AUTOZERO
UNLOCKED
6.4.3. Interface
The unit is equipped with external interface, which can be used according to setting
described below. Interface pin numbers are listed on rear panel of the unit.
Pin
Abbr.
Name
1
+5V
-
2
AIN−
ANALOG INPUT
3
AIN+
4
GND
-
5
DIN2
DIGITAL INPUT 2
6
DIN1
DIGITAL INPUT 1
7
ACOB
DIGITAL OUTPUT
SWITCH
8
ACOA
For external input/output 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 size up to 1.5 mm
K
EYLOCK SETTING
Description
Keypad is fully locked. All keys work only for interrupting
repetition of fatal error signal. Default value.
Keypad is locked except key ZERO. Other keys work only for
interrupting repetition of fatal error signal.
Keypad is fully functional.
I
NTERFACE SPECIFICATION
Description
Auxiliary supply +5 V DC max. 40 mA.
Analogue input ground. Internally connected with GND and
chassis.
Analogue input signal. 0-10 V DC. Overvoltage protection to
24 V.
Ground. Internally connected with chassis.
Digital input 2. Compatible with TTL, HC, HCT. Overvoltage
category up to 24 V. Opened at level H. Active at level L.
Digital input 1. Compatible with TTL, HC, HCT. Overvoltage
category up to 24 V. Opened at level H. Active at level L.
Semiconductor switch, contact A and B.
Operating voltage max. 60 Vdc, 42 Vac. Operating current
max. 240 mA. Switch impedance ON max. 2.5 ohm. Residual
current max. 1 uA.
22 / 47
ECD2800 / ECD2600
2
.
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