Siemens Wallace & Tiernan Chem-Ad VPP Instruction Manual page 66

4.
Installation
Overview of operating modes
Switching operating modes
66
4.1.5 Setting the operating mode (Chem-Ad
Two operating modes are available. The operating mode defines
the control of the external release (mode 1) or operation with an
external analog signal (mode 2).
Factory setting: Operating mode 1
Mode
Operating mode 1
External release
Operating mode 2
Analog signal (4 -20 mA)
Please note
Operating mode 1 (external release):
If an external release is not present, terminals 13/14 must be
bridged.
Operating mode 2 (external analog signal):
At an analog signal < 4 mA, the pump does not dose (no error
message).
Operating mode 2 (external analog signal):
When operating with an external analog signal, it is not possible to
set the flow rate on the potentiometer.
If a suction lance is not connected (not empty), terminals 11/12
must be bridged.
When the peristaltic metering pump housing is open the jumper is
visible. You can switch the operating mode as follows:
1 Place the jumper with tweezers or the like onto the desired pin
pair.
Chem-Ad ® VPP / VPP-E / VPP-DC
Flow rate
[ml/h]
150 / 600 / 2000 /
4000
150 / 600 / 2000 /
4000
WT.490.250.000.DM.IM.0911
®
VPP-E only)
Jumper
1 2 3 4
1 2 3 4