Cervis TM70 Manual de Instalação descarregar pdf (Página 65)

TM70Bi V3.1 (03/09) 1121174.pdf

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0 -+ without ramp

4 -+ 0,4 s

8 -+ 1,0 s

12 -+ 2,0 s

1 -+ 0,1 s

5 -+ 0,5 s

9 -+ 1,2 s

13 -+ 2,5 s

2 -+ 0,2 s

6 -+ 0,6 s

10 -+ 1,5 s

14 -+ 3,5 s

3 -+ 0,3 s

7 -+ 0,8 s

11 -+ 1,7 s

15 -+ 5,0 s

Each output is a PWM signal with current feedback in which is possible the control and compensation of the

switching frequency and pulse width. It also implements a superimposed "dither" signal on the output, with

variable frequency and amplitude, to soften the response of certain hydraulic valves. The "dither" is available

only when the switching frequency of the PWM output is 5 kHz:

PWM Frequency range: 33,35,40,45 ... 1275 and 5000 Hz

Dither Frequency range: 33 ... 255 Hz

Dither Amplitude range: 0 ... 50%

Through Tele-Alignment can set the maximum and minimum values, the polarity inversion, acceleration or

deceleration ramp and curve type of the analogue output. To change to Tele-Alignment mode is necessary to

introduce a bridge in the jumper P6 (see Jumpers configuration). Only available for TM70 consol box from

3.1 software version or higher.

Other features of the PWM current outputs:

Power supply range of the expansion 8-30V, and of the outputs 5-35V.

Each output channel has 2 outputs only one of which will be connected, according to the sign of the

input. 2 PWM outputs are identical and independent.

The output resolution is 128 steps by semiaxis (256 max – 8 bit), corresponding to step 0 a null

output and step 127 to obtained from the permanent exit from the positive supply.

Max current = 5A (each output).

Outputs protected against short-circuit.

18.2- CONNECTIONS & JUMPERS CONFIGURATION

CONNECTIONS WITH THE

LR72

The expansion connects to the LR72 electronic board through two connectors, one of 2 pin for power supply

(VI + and GND) and the other of 5 pin for the CAN bus with the following signals:

Power connector

Pin number

Function

GND

Ground

+VI

DC between 8 y 30V

CAN bus connector

Name

Function

VCAN

Power supply

CANH

CANH pin of the CAN bus

GNDCAN

Ground (Shielding)

CANL

CANL pin of the CAN bus

GNDCAN

Ground

OUTPUTS

Each analogue output has two serial relays that switch the output signal to one of two ways, the direct or the

inverse. If not activate any of the relays, both outputs (the direct and inverse) are disconnected.

1 2 ... 60 61 62 63 64 65 66 67 68 69 70 ... 75 76

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Cervis TM70 Manual de Instalação Página 65

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