MANU ELECTRONICS ManuFlo ME697, Руководство пользователя

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ME697 (Eagle version)
Manu Flo
® ™
Flow Measurement Products
Page 3
MANU ELECTRONICS
PTY LTD
ME697 Troubleshooting
• keep input rate to AC Computer/PLC below 15 Hz (otherwise overdose could occur due to computer missing pulses).
• if the ME697 appears disabled (e.g. displays read zero, does not count, no functions even in manual mode) then the
Master Reset black Opto on the PLC is leaking, or is stuck on causing a continual reset drive to the ME697.
Measure the leakage voltage between the Master Reset (Connector J2, pin 7) and Neutral (Connector J2, pin 8). If
there is more than 60vac voltage, then:
o
replace the Black Optos; and/or
o
fit a 12-15 K Ω 10W resistor between the Master Reset and Neutral (i.e. between pins 7 and 8 of Connector J2).
If there is still a problem, then it is a Computer issue that the master reset is stuck on. Disconnect the plug connecting
the Computer to J2 and batch manually.
•
if the batching computer’s black Optos are leaky (i.e. there is more than 60vac residual voltage after Opto latches off,
which could cause batching to continue because the ME697 relay is being held on), then:
o
replace the Black Optos; and/or
o
fit a 12-15 K Ω 10W resistor between each black Opto’s Active 240vac Computer Start (i.e. relevant pin on
connector J2) and Neutral (pin 8 on Connector J2).
• if experiencing slow counts on one channel after batch completes: ensure that Check Valve is not faulty.
• if experiencing phantom counts on one channel: check wiring and shield.
•
if experiencing constant phanton counts on many channels: the internal 1000 μ F electrolytic capacitor may have
failed, so return the ME697 to ManuFlo for service.