Innotech Genesis V4 System - Manual (Page 62)

Installation Instructions for Innotech Genesis Systems
Edition 011100 4-7
d. Ensure the voltmeter reads Zero Volts. If the reading is other than Zero Volts it
indicates the input is driven by Normally Closed contacts or the input is not wired
correctly.
WARNING
AVOID RISK OF ELECTRICAL SHOCK. OBSERVE ALL LOCAL
ELECTRICAL SAFETY REQUIREMENTS WHEN PERFORMING
THE NEXT STEP.
e. With the voltmeter still connected, manually close the input contacts. If it is not
possible to close the circuit manually, connect a jumper wire across the contacts at
the switching device, as shown in Figure 4-2.
f. Ensure the voltmeter indicates the proper signal voltage as listed in Table 4-2.
Ensure that the voltmeter indicates the correct polarity. The unit will not operate
properly if the signal polarity is incorrect.
g. Release the manually closed contacts or remove the temporary jumper from the
switch contacts.
h. Repeat Steps c. through g. for the remaining digital input channels.
4-1.2.2.2. Internal-Source Digital Inputs. The GENII DI REM provides eight
dry contact (voltage-free) inputs to sense contact closure from field equipment. The
eight digital inputs are connected to terminals A through H (see Figure 4-3). Contacts I
and J are signal common terminals. The REM provides 5Vdc between each input and
common. This voltage is shorted to common when the switch is closed. Check the
digital input wiring as follows:
a. Tag and disconnect the RS485 Comms cable(s) from the RS485 Comms Connector
at the upper-right corner of the REM. The cable shields may be left connected if
desired.
b. Apply 24Vac operating power to the GENII DI REM. Power to all other units
should be off.
c. Set the digital voltmeter range to read at least 5.0Vdc.
d. Connect the voltmeter between the first digital input channel (Terminal A) and the
associated switch common (Terminal I or J). Observe polarity, ensuring the red (+)
test lead is connected to Terminal A and the black (-) test lead is connected to the
switch common terminal.
e. Observe the voltmeter. It should indicate 5Vdc with the input switch open.
WARNING
AVOID RISK OF ELECTRICAL SHOCK. OBSERVE ALL LOCAL
ELECTRICAL SAFETY REQUIREMENTS WHEN PERFORMING
THE NEXT STEP.
f. Manually close the input switch. If that is not practical, connect a short jumper wire
across the contacts.