Calibration And Setup - Weidmuller DMA Bedienungsanleitung

• Calibration and Setup

General
The SET (setpoint) and DB (deadband) adjustments control the
setpoint and hysteresis for each alarm channel. Internal jumpers
control the alarm type and relay coil energisation.
Equipment requirements
• A suitable DC mA source
• An accurate digital multimeter (accurate to 0.05 mV and ±0.1 μA)
• Flat bladed screwdriver (blade width less than .5 mm / 0.1 inch)
Terminal connections for calibration
Input signal
Power supply
Setpoint (SET Control) adjustment
The SET controls for each channel are on the front panel of the
transmitter. For both high and low type alarms you turn the control
clockwise to trip the alarm and anticlockwise to reset it. The procedure
for adjustment is as follows:
1. Connect up the instrument according to the table above.
. Set the input source to the trip point.
3. Turn the SET control anti-clockwise until the LED extinguishes.
. Slowly turn the SET control clockwise until the LED lights up.
Deadband (DB Control) adjustment
The deadband control adjusts the point at which a tripped alarm
resets. This point will be above the setpoint for a low type alarm or
below for a high type. The procedure for adjusting the DB control is as
follows:
18
Signal type
DC milliamp source (+)
DC milliamp source (−)
Neutral (−)
Live (+)
Terminal
2
4
9
10