Delta MMC120 - Manual (Page 15)

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losing parameters, provided that the Quantum downloads the settings to the
MMC120 on each power-up.
Setup Details
Wiring Notes
Use shielded twisted pairs for all connections to inputs and outputs. Route the transducer
wiring separate from other wiring. You must provide the power supplies needed for your
transducers.
Drive Outputs
Three Pin Plug-in Terminal Block
Pin Function
1 Axis 1 Drive
2 Drive Common
3 Axis 2 Drive
When wiring the system, it is important that the drive extends and transducer counts
increase when a positive voltage is sent to the drive. The extend direction is defined as
the direction that causes the transducer to return increasing counts. The extend direction
of a magnetostrictive transducer is away from the head.
CAUTION: If the outputs from the MMC120 are reversed, the axis will be
uncontrollable when power is connected. Confirm that your wiring is correct!
Magnetostrictive Transducer Inputs
Nine-Pin Plug-in Terminal Block
Pin Function
1 Axis 1 + Interrogation
2 Axis 1 – Interrogation
3 Axis 1 + Return
4 Axis 1 – Return
5 MDT Common
6 Axis 2 + Interrogation
7 Axis 2 – Interrogation
8 Axis 2 + Return
9 Axis 2 – Return
NOTE: The following example schematics do not include transducer pin numbers,
color codes, or power supply requirements, since these vary among different
transducers. To determine your power supply needs and connector pin-outs or
cable color codes, consult your transducer documentation.
The MMC120 family can interface to transducers with either single-ended (TTL) or
Differential Line Driver (RS-422) interrogation signals. With RS-422 signals, connect