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Discontinued Part
DELTA TAU: Digital Interface Board (ACC-8F)
The Accessory 8F digital interface board (ACC-8F) for the PMAC2 family of controllers provides pinouts for two channels with digital-input amplifiers. The amplifier inputs are direct PWM commands. The ACC-8F board has one flat-cable connection to the PMAC2. The connection to each digital amplifier is through a separate Mini-D connector. Encoder inputs can be brought in either through DB15 connectors, IDC Headers, or removable modular terminal blocks. Main flag inputs are brought in through DB9 connectors or removable modular terminal blocks. Supplementary flag inputs can be interfaced via the DB15 connectors, removable modular terminal blocks, or an IDC header.
Note: Early prototype ACC-8F boards (Part # 602481-100) were 4-channel boards. The pinouts on some connectors were different. Pilot-run ACC-8F boards (Part # 602481- 101) had DB-37 amplifier connectors instead of Mini-D 36-pin amplifier connectors.
ACC-8F has the following features:
• Detects a loss of any encoder quadrature signal (A+, A-, B+, B-) or if the encoder is not connected. It will bring AFLT1+ and AFLT2+ lines (JMAC1 pins 19 and 69) low in either case.
• Supports Hall-effect signals for power-on phase information through its supplemental U, V, W and T inputs.
• Decodes U, V, W, T and Index signals (Option 6) if they are encoded on the C+/C- channels (i.e. Yaskawa multiplexed encoders). Jumper selectable.
• Accepts regular quadrature encoder feedback (A, B,C/Z) either single ended or differential. (Default).
• Has built-in power delay circuit (Option 6) which will supply a power to an encoder only after a PMAC2’s hardware and software circuits were determined to function properly. If this feature is selected by jumping pins 2 and 3 of E24, it is assured that a motor power-on information is read correctly by PMAC2. Delta Tau recommends the use of this feature when working with encoders that send power-on information right after the encoder power is applied.(i.e. Yaskawa multiplexed encoders )
• The main input flags (HOME, PLIM, MLIM and USER) are optically isolated with sinking or sourcing capability to 24V. AC opto modules are used.
• Amplifier Fault Detection — If the amplifier fault condition causes low on FLTx+ or FLTx- (P5, P6), ACC 8F passes amplifier FCx-A, FCx-B, FCx-C and FCx-D fault code bits to PMAC2 via CHUx+, CHVx+, CHWx+ and CHTx+ lines. If this function is not required, remove E21 and E23 jumpers.
The ACC-8F has a 6-point terminal block (TB3) that permits a +5V supply to be brought in externally for encoders, etc. Alternatively, the +5V supply can come from the PMAC2 through the ACC-8F if the jumper E1 on ACC-8F is ON. If more than about 250 mA will be used through the ACC-8F, the +5V power should be brought in through this terminal block, and the E1 jumper should be OFF to keep this supply from fighting the +5V supply on PMAC2.
ACC-8F+OPT1+ OPT6
ACC -8F Part No.:3A0-602775-10x PMAC2 2-axis PWM breakout, w/digital current feedback (36-pin con) (Must choose Option 1, 2, or 3) OPT1 Part No.:301-0ACC8F-OPT Option 1 - Terminal Block interface for encoder inputs OPT6 Part No.:306-0ACC8F-OPT Option 6 - incremental encoder interface
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