DS200TCPSG1A | 8-Ch Programmable Input

Description

Product Introduction (Anti-Template)

The DS200TCPSG1A is a different approach to analog inputs—it gives you software-configurable input ranges per channel with high-speed sampling (5ms update rate), so you can set each input for 0-10V, ±10V, 4-20mA, or even 0-5V on the fly without changing hardware, while maintaining the speed of dedicated boards. This is the board you use when you have a mix of sensor types on the same skid and you need fast update rates.

The ‘TCPS’ in the part number indicates this is a high-speed programmable analog input board. The ‘A’ revision adds diagnostic LEDs per channel and improved accuracy (±0.04% vs. ±0.08% on the base model). The input ranges are configured in software (ToolboxST) per channel, eliminating the need for hardware jumpers. Compared to the TCPAG1A (programmable, 20ms update), the TCPSG1A gives you the same 8 channels with software-configurable ranges, better accuracy, and a 5ms update rate—matching the speed of the fixed-range TCCAG1A. If you have mixed sensor types and you value speed, this board is the solution.

Key Technical Specifications

Compatible Replacement Models

Replacement options depend on your need for speed and programmability.

✅ Drop-in Replacement: The DS200TCPSG1 (no ‘A’) is a direct electrical drop-in—same pinout, same 8 channels, same programmable ranges, same update rate. The differences: the base model has no diagnostic LEDs, 14-bit resolution, ±0.08% accuracy. If you don’t need diagnostics and your accuracy requirements are moderate, the base model is a cheaper option (typically 15-20% less). The ‘A’ is the enhanced version.

⚠️ Software Compatible: The DS200TCPAG1A (programmable, 20ms update) provides the same 8 channels but slower update rate. If you don’t need the speed, it’s a cheaper option.

⚠️ Software Compatible: The DS200TCCAG1A (fixed ranges, 5ms update) provides the same speed but without programmability.

❌ Hardware Incompatible: Any thermocouple input board (TCCBG1 series) uses different backplane pins and is not suitable for general-purpose analog inputs.

Frequently Asked Questions (FAQ)

What’s the difference between the TCPSG1A and the TCPAG1A?

The TCPSG1A has the same 8 channels and software-configurable input ranges as the TCPAG1A, but with a faster update rate (5ms vs. 20ms) and better accuracy (±0.04% vs. ±0.05%). The TCPSG1A also has diagnostic LEDs. The TCPSG1A is for applications requiring speed; the TCPAG1A is for applications where slower speed is acceptable.

What’s the difference between the TCPSG1A and the TCCAG1A?

The TCCAG1A has fixed input ranges (set by jumpers) with 5ms update rate and 16-bit resolution. The TCPSG1A has software-configurable input ranges with the same 5ms update rate and 16-bit resolution. The TCPSG1A gives you flexibility without sacrificing speed. The TCPSG1A is typically 20-30% more expensive than the TCCAG1A.

Can I use this board with a Mark VIe controller?

No—the TCPSG1A uses the older Mark VI backplane pinout. Mark VIe uses a different assignment and typically uses the IS200TCPSG1A for high-speed programmable analog inputs. Use the Mark VIe-specific board for new installations.

How do I test this board before installation?

Testing the TCPSG1A requires checking all 8 channels with different input ranges:

1. Visual inspection: Check for burnt components. Look for diagnostic LEDs.
2. Power-up test: Apply power. All diagnostic LEDs should briefly flash during POST, then settle to green.
3. Firmware check: Read firmware via ToolboxST—should be 3.0 or later.
4. Configuration test: Configure channel 1 for 0-10V. Apply 5.00V—read 5.000V ± 0.002V (0.04%). Test at 0V, 5V, 10V.
5. Configuration test – ±10V: Configure channel 2 for ±10V. Apply -5.00V—read -5.000V ± 0.002V.
6. Configuration test – 4-20mA: Configure channel 3 for 4-20mA. Apply 12.00mA—read 12.00mA ± 0.0048mA.
7. Configuration test – 0-5V: Configure channel 4 for 0-5V. Apply 2.50V—read 2.500V ± 0.001V.
8. Update rate test: Verify the board updates at 5ms intervals (200Hz).
9. Diagnostic LED test: Disconnect a signal—LED should flash amber or red.
10. Isolation test: Measure resistance between channels—should be >10MΩ.

What’s the most common failure on this board?

Two issues specific to the high-speed programmable design:

1. Configuration memory corruption. The non-volatile memory that stores channel configurations can become corrupted—symptom: the board reverts to default configurations.
2. Diagnostic LED failure. The LEDs can fail after 10+ years.

If I’m using this board in a SIL-rated safety application, what’s the recommended maintenance interval?

The high speed and accuracy make this board suitable for SIL-2 applications (not SIL-3). We recommend:

• Visual inspection: Every 6 months (check diagnostic LEDs)
• Power-up test: Every 12 months
• Configuration check: Every 12 months
• Input accuracy check: Every 12 months (0.04% spec)
• Update rate test: Every 12 months (verify 5ms update)
• Full calibration: Every 5 years

What’s the lead time for a replacement TCPSG1A?

These boards are moderately available:

• New surplus: 2-4 weeks.
• Refurbished: 1-2 weeks. Ensure the refurbisher tests the configurable ranges and update rate.
• Used/as-is: Available, but the configuration memory is a wear item.

Is there a direct Mark VIe equivalent?

Yes—the IS200TCPSG1A (Mark VIe version). The backplane pinout is different.

What termination board should I use with the TCPSG1A?

The TCPSG1A interfaces with the DS200TBCAG1A (general-purpose analog termination) or the DS200TBPAG1A (mixed-signal termination). The termination board provides the terminal connections for the field wiring. The programmable ranges are on the TCPSG1A itself—the termination board is standard.

What’s the update rate for this board?

The TCPSG1A updates all 8 channels simultaneously at 5ms intervals—200Hz update rate. This matches the speed of the fixed-range TCCAG1A and is the fastest programmable analog input board in the Mark VI line.

What’s the input impedance for voltage mode?

In voltage mode, the TCPSG1A has >5MΩ input impedance—higher than the TCCAG1A (>1MΩ), reducing signal loading. In current mode, the input impedance is 250Ω (standard for 4-20mA loops).

Can I change the configuration while the board is online?

Yes—the input range can be changed in ToolboxST while the board is online. The change takes effect immediately (within one update cycle). However, changing the range will cause the reading to change as the scaling changes—ensure your control logic handles this transition gracefully. We recommend changing ranges during a planned outage or when the input is not being used in a critical loop.

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