4
Connections (see pages 37 & 38)
Inputs A and B in Unidirectional mode
In the two Unidirectional modes, the count is incremented or decremented by input A,
whilst the direction is dependent on input B.
In Unidirectional High mode, both inputs are high speed inputs, suitable only for
electronic signal sources, eg. transistors, proximity switches, encoders.
In Unidirectional Low mode, both inputs are low speed inputs (30Hz max), suitable
for contact closure sources, eg. microswitches, relays, pushbuttons. Any contact
noise is removed by filtering. They can also be used for electronic signal sources.
Inputs A and B in Quadrature mode
In Quadrature mode, the count is incremented or decremented depending on the phase
difference between input A and input B.
In this mode, both inputs are high speed inputs, suitable only for electronic signal
sources, eg. transistors, proximity switches, encoders.
Input K (Keyboard Inhibit) and Input R (Reset)
Both inputs are low speed inputs as described above.
Wire Size
Maximum wire size the connector can accept is:
2.5mm
2
cross sectional area; 1.8mm diameter. (equivalent 13 AWG solid wire)
Description Range
1 Live
2 Neutral
94 to 240VAC ±10% 50/60 Hz
3 Auxilliary DC Supply +ve
Power Supply (see pages 37 & 38)
The counter can be powered by AC mains, in which
DC ±10%, 100mA max) which can be used to power
sensors if required.
Alternatively, the counter can be powered by an
external DC source (+12 to 24V DC ±10%, 100mA),
connected to pins 3 and 11.
4
5
P1 Relay
6
7
P2 Relay
Isolated relay contacts
50/60Hz 300V AC max, 220V DC max
See
Specification, page 2
8 Input A
9 Input B
Opto-isolated, 10-30 VDC
See below, and
Specification, page 2
10 8/9 Common See
Input Polarity, page 5
11 Auxilliary DC Supply -ve 0V - See pin 3, above
12 Keyboard Disable Input
(Input K)
Opto-isolated, 10-30 V AC/DC
See
Specification, page 2
This input can be used to disable the front panel
buttons, but only if configured by the
Inhibit
option.
See
Programming, page 6
13 External Reset Input
(Input R)
Opto-isolated, 10-30 V AC/DC
See
Specification, page 2
14 12/13 Common See
Input Polarity, page 5
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