Page 45 of 69
Proton Products InteliSENS DG2030 Diameter Gauge Instruction Manual (Issue 1a)
S
TANDARD
E
LECTRICAL
I
NTERFACES
S
PEED PULSE INPUT
The speed pulse input may be connected to a line speed gauge (such as a Proton Products SL or
SLR series non-contact laser speed and length gauge).
Measured line speed input is required for:
•
Helix mode operation.
•
PI feedback controller operation.
•
Statistical Process Control (SPC) operation.
Speed pulse input connection
The speed pulse input is fitted as standard and may be accessed through the “INTERFACE”
connector.
Connector type: DB25 female (socket)
Pin Designation Description
Notes
11
DGND
Digital ground
Ground reference for SPD1 and SPD2.
12
SPD2
Speed pulse input 2
For low voltage speed pulses (e.g. 5V TTL).
13
SPD1
Speed pulse input 1
For high voltage speed pulses
(e.g. 12 ~ 24V speed encoders).
S
Shield
Ensure that the cable shield is connected to this via the
plug shield connection.
Speed pulse input electrical specification
•
A choice of two speed pulse inputs are available: one input is for high voltage pulses and one
input is for low voltage pulses; only one input should be selected for use.
•
The ground reference (GND) for the speed pulse inputs is not isolated from earth.
Specification
Min
Typ
Max
Units
SPD1 (pin13)
High voltage
(e.g. 12 ~ 24V speed encoders)
Low state (logic 0) input voltage
+5
V
High state (logic 1) input voltage
+9
V
Absolute input voltage
-50
+50
V
SPD2 (pin 12)
Low voltage
(e.g. 5V TTL)
Low state (logic 0) input voltage
+2
V
High state (logic 1) input voltage
+4
V
Absolute input voltage
-30
+30
V
Pulse frequency
250
kHz
