Bell & Gossett P2001487 Technologic Pump Controller - Manual (Page 80)

Digital inputs
Programmable digital inputs 4 (6) 1)
Terminal number 18, 19, 27 1) , 29 1) , 32, 33,
Logic PNP or NPN
Voltage level 0-24 V DC
Voltage level, logic'0' PNP <5 V DC
Voltage level, logic'1' PNP >10 V DC
Voltage level, logic '0' NPN 2) >19 V DC
Voltage level, logic '1' NPN 2) <14 V DC
Maximum voltage on input 28 V DC
Pulse frequency range 0-110 kHz
(Duty cycle) Min. pulse width 4.5 ms
Input resistance, R
i
approx. 4 kΩ
Analog inputs
Number of analog inputs
2
Terminal number 53, 54
Modes Voltage or current
Mode select Switch S201 and switch S202
Voltage mode Switch S201/switch S202 = OFF (U)
Voltage level -10 to +10 V (scaleable)
Input resistance, R
i
approx. 10 k
Ω
Max. voltage
±20 V
Current mode Switch S201/switch S202 = ON (I)
Current level 0/4 to 20 mA (scaleable)
Input resistance, R
i
approx. 200
Ω
Max. current 30 mA
Resolution for analog inputs 10 bit (+ sign)
Accuracy of analog inputs Max. error 0.5% of full scale
Bandwidth 20 Hz/100 Hz
The analog inputs are galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
Illustration 10.1 PELV Isolation
Pulse
Programmable pulse
2/1
Terminal number pulse 29 1) , 33 2) / 33 3)
Max. frequency at terminal 29, 33 110 kHz (Push-pull driven)
Max. frequency at terminal 29, 33 5 kHz (open collector)
Min. frequency at terminal 29, 33 4 Hz
Voltage level see 10.2.1 Digital Inputs
Maximum voltage on input 28 V DC
Input resistance, R
i
approx. 4 k
Ω
Pulse input accuracy (0.1-1 kHz) Max. error: 0.1% of full scale
Specifications
77
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