Watlow PPC-2000 - Manual (Page 266)

Chapter 7: Specifications PPC-2000 User’s Guide
238 Watlow Anafaze Doc.# 30002-00 Rev 2.3
Table 7.19 Analog Input Specifications
*Not applicable to PPC-2022
Analog Inputs
8 or 16 differential
32 single-ended
Nominal Isolation
Input to bus: 500Vdc continuous
Input to frame ground: 120Vac
Between inputs: ±60Vac (PPC-2021)
Between inputs: 240Vac (PPC-2024, 2025)
Between inputs: no isolation (PPC-2022)
Calibration Automatic zero and full scale
Normal Mode Rejection Ratio
(between + and - inputs)
60 dB @ dc to 1000Hz with 500 ohm input impedance
Common Mode Rejection Ratio*
(between input and frame ground) 120 dB @ dc to 1000Hz with 500 ohm input imped-
ance
A/D Conversion Integrating voltage to frequency
DC Voltage Input Range
-1 to 10Vdc;
ranges selectable
0 to 50mV,
0 to 100mV,
0 to 500mV,
0 to 1V,
0 to 5V,
0 to 10V
Current Input Range
0 to 20mA; ranges selectable
0 to 20mA or 4 to 20mA
RTD Input 100 ohm Pt, 3 wire
T/C Open Detect 2.5 kOhms or more (upscale)
Source Impedance
Measurements are within specification up to 500 ohm
source resistance
Resolution 0.003% greater than 15 bits
Accuracy (voltage)
0.05% at 25ºC (PPC-2021, 2024, 2025)
0.1% at 25ºC (PPC-2022)
Accuracy (current)
0.1% at 25ºC (PPC-2021, 2024, 2025)
0.75% at 25°C (PPC-2022)
Temperature Coefficient <50 ppm/ºC, 0.005%/ºC
Sample Rate @ 60 Hz, PPC-2021,
PPC-2025
380 msec to sample all 16 channels (2.6 Hz)
Sample Rate @ 60 Hz, PPC-2022 666 msec to sample all 32 channels (1.5 Hz)
Sample Rate @ 60 Hz, PPC-2024 220 msec to sample all 8 channels (4.5 Hz)