Cleveland Motion Controls Classic Series DIN Rail Amplifier with Isolated Output MWI-13467 REV CA - Manual (Page 20)

C LASSIC S ERIES A MPLIFIER W / I SOLATED O UTPUTS MAN-13467 REV CA
Page 20 of 30
2.12.2.4 D AMPED +/- 1 M A A NALOG
The meter output stage can be configured to operate as current output (sinking or sourcing current depending upon
output polarity). It can be used concurrently with the other outputs. It does not have an individual Gain and Zero
adjustment, necessitating that a compromise be made during calibration, or a particular output be favored (over one
that can accommodate external scaling and offsetting).
To facilitate individual scaling of the analog meter a panel meter (MO-13655) with scaling board, is available as
an accessory for use with Classic Series tension transducer amplifiers. The scaling board lets the analog meter
have a different scaling factor than that of the main (un-damped) analog output.
MAXIMUM METER RESISTANCE = 7K OHMS
1mA
1
4
3
2 +
Figure 12 - Output Wiring, Damped mA Analog Meter with Scaling Board
3 P OWER - UP AND T ESTING
3.1.1 B EFORE A PPLYING P OWER
Before applying power, check the wiring to the amplifier. Pay particular attention to the following:
• Double check the transducer connections to ensure that the excitation supply is not
short-circuited.
• Use an approved anti-static wrist strap when adjusting any switch
settings/potentiometers on the amplifier.
• Use the appropriate tool when making any adjustments to the potentiometers on the
amplifier or changing switch settings. Damage to the circuitry may occur if excessive
force is used or a conductive tool accidentally contacts internal voltages.
Before applying power, confirm that the zero potentiometers are mid-span and the gain is minimum. Use the
following table to adjust potentiometers:
Adjustment Potentiometer Default
Gain – P2 Full counter-clockwise
Zero – P1 Mid-way (9 turns from full counter-clockwise)
Coarse zero Mid-way (6 turns from full counter-clockwise)