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EXCEL 500/600 INSTALLATION INSTRUCTIONS
XP502 with External UPS XAPU 24-2F (Distributed
I/O and Internal Modules)
As shown in the figure below, two XAPU 24-2F UPSs are
required when the controller has both internal and Distributed
I/O modules connected.
Fig. 56. Connection of XAPU 24-2F UPS (internal and
Distributed I/O modules)
XAPU 24-2F number 1 is connected to the XP502 for the
controller, only. No other devices may be powered by XAPU
number 1.
XAPU 24-2F number 2 is connected to the XSL511
LONWORKS connector modules for powering the Distributed
I/O modules. The connection through relay K1 of the XP502
insures that the power supply to the Distributed I/O modules
will be switched OFF when the XP502 is switched OFF.
XF521A Analog Input Module
Technical Specifications
Number:
eight inputs (AI1 – AI8)
Input:
0...10 Vdc (low-input impedance, 25kOhm to 10 V /
200kOhm to GND);
0...20 mA (via external 500-ohm resistor);
4...20 mA (via external 500-ohm resistor);
NTC 20K ohm (-50...+150 °C);
PT1000 (-50...+150 °C)
Protection:
up to 40 Vdc / 24 Vac
Resolution:
12-bit resolution
Accuracy:
±75 mV or 0.75% (0...10 V)
Table 7. Accuracy of analog input sensors
Measurement error (without
Range
sensor tolerance)
PT1000 NTC 20K
-58...-4 °F (-50...-20 °C) ≤ 1.2 K ≤ 5.0 K
-4...+32 °F (-20...0 °C) ≤ 0.7 K ≤ 1.0 K
+32...86 °F (0...30 °C) ≤ 0.5 K ≤ 0.3 K
86...158 °F (30...70 °C) ≤ 0.7 K ≤ 0.5 K
158...212 °F (70...100 °C) ≤ 1.2 K ≤ 1.0 K
212...266 °F (100...130 °C) ≤ 1.2 K ≤ 3.0 K
266...302 °F (130...150 °C) ≤ 1.2 K ≤ 5.5 K
With current sensors, a terminating resistor of R1 = 499 ohms
± 0.25 % must be connected.
Terminal 18 is an auxiliary output voltage (+10 Vdc, I
max
=
5 mA) available for various sensor circuits.
Fig. 57. XF521A Analog Input module connections
27 EN1R-1047GE51 R0902