Internal I/Os Of The Eaglehawk Nx - Honeywell CENTRA LINE EAGLEHAWK NX Installation & Commissioning Instructions

EAGLEHAWK NX CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

Internal I/Os of the EAGLEHAWK NX

The CLNXxxx00xxx is not equipped with inputs or outputs.
The following sub-sections thus apply only to the
CLNXxxx14xxx and CLNXxxx26xxx.
Universal Inputs
The CLNXxxx26xxx is equipped with ten (CLNXxxx14xxx:
four) universal inputs (UIs) configurable (in COACH NX).
For information on the accuracy of the sensor inputs, their
differential measurement error, the characteristics (i.e., re-
sistances and resultant voltages in dependence upon tem-
perature) of the various different sensor types which can be
connected to them, and on the thresholds at which sensor
failures are recognized, see section "Appendix 2" on pg. 53.
Table 11. Specifications of UIs
criteria
voltage input  UI1-UI10: 0 ... 10 VDC with pull-up resistor
(default)
 UI1-UI8: 0...10 VDC w/o pull-up resistor
 UI1-UI8: 2...10 VDC w/o pull-up resistor
current input  UI1-UI10: 0 ... 10 VDC w/o pull-up resistor,
external 499Ω resistor required to measure
0...20 mA
 UI1-UI8: 2...10 VDC w/o pull-up resistor,
external 499Ω resistor required to measure
4...20 mA
supported  NTC10kΩ (-30...+100 °C)
sensor types
 NTC20kΩ (-50...+150 °C)
 Slow binary input (static, dry-contact), 0.4
Hz
12-bit resolution
resolution
±75 mV (0 ... 10 V)
accuracy
against short-circuiting, 24 VAC
protection
V
i
GND
Fig. 29 Internal wiring of UI1-UI8 configured for voltage
input (without pull-up resistor)
EN1Z-1039GE51 R1218
value
200 k
V
i
Fig. 30. Internal wiring of UI1-UI10 configured for input
from NTC10kΩ / NTC20kΩ / voltage input (with pull-up
Slow Binary Input Specifications
When configured as slow binary inputs, the universal inputs of
the EAGLEHAWK NX have the following specifications:
open contact ≥ 100 kΩ
closed contact ≤ 100 Ω
The polarity (normal = N.O. contact or reverse = N.C. contact)
configuration defines if a logical 1 or a logical 0 is detected for
a closed contact. This is done by selecting (in COACH NX)
one of the following options:
closed external contact → state=1
normal (default)
open external contact →
closed external contact → state=0
reverse
open external contact →
Pulse Counter Specifications
Using COACH NX, the universal inputs of the EAGLEHAWK
NX can be configured as pulse counters (totalizers).
If the duty cycle is 50% / 50%, the pulse counter supports up
to 0.4 Hz. Counting is done on the rising edge.
Table 12. UIs of EAGLEHAWK NX configured as slow BIs
max. 0.4 Hz
frequency
min. 1.25 s
pulse ON
pulse OFF min. 1.25 s
bounce max. 50 ms
26
10 VDC
25 k
200 k
GND
resistor)
state=0
state=1