Nths03 Termination Unit Specifications - ABB Symphony Harmony Series Instruction

Table 1-3. NTHS03 Termination Unit Specifications
Property
Inputs
LVDT secondary 2-position
Digital
Outputs
LVDT supply primary
excitation
Servo valve coil
WBPEEUI260047A0
Characteristic/Value
4 analog total, 2 LVDT secondary (each with 2 secondaries)
24 V , ±7 VDC common mode, 10 kΩ differential input
PP
impedance
3 optically isolated (250 VDC) contact inputs (raise, lower, and
trip bias)
State Voltage (VDC)
On 18 minimum
Off 11 maximum
(run-off voltage)
NOTE: 1. When V = 24 VDC nominal.
IN
2 analog: LVDT primary 1 and 2
Operating frequency: 400 Hz to 15 kHz
LVDT Excitation Voltage (V
2.1
2.6
3.6
4.5
5.4
6.0
7.7
9.0
13.5
18.0
4 analog: 2 redundant (selectable) with servo output protection.
Shorting or opening 1 output does not affect the other output.
Output Current (mA)
± 8
± 16
± 24
± 32
± 40
± 48
± 56
± 64
Current
2.8 mA nominal forward
10 µA maximum leakage
) Minimum LVDT Impedance (Ω)
PP
15.0
18.0
24.0
30.0
36.0
40.0
51.3
60.0
90.0
120.0
Maximum Coil Impedance (Ω)
750
375
250
187
150
125
107
93
Specifications
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